diff --git a/.gitignore b/.gitignore
index 5cdcbcd..172c657 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,2 @@
-*.beam
-*~
-ebin/*
-doc/*
-.eunit/
+_build/
+rebar.lock
diff --git a/Makefile b/Makefile
deleted file mode 100644
index d37a845..0000000
--- a/Makefile
+++ /dev/null
@@ -1,15 +0,0 @@
-PROJECT = riichi
-
-DEPS = reloader eunit_formatters
-dep_reloader = git https://github.com/oinksoft/reloader.git master
-dep_eunit_formatters = git https://github.com/seancribbs/eunit_formatters.git master
-
-include erlang.mk
-
-ifneq ($(wildcard test/),)
-ebin/$(PROJECT).app:: $(shell find test -type f -name \*_tests.erl)
-	$(if $(strip $?),$(call compile_erl,$?))
-endif
-
-eunit: clean deps app
-	$(gen_verbose) erl -noshell -pa ebin -eval 'eunit:test({application, $(PROJECT)}, [no_tty, {report, {eunit_progress, [colored, profile]}}])' -s init stop
diff --git a/erlang.mk b/erlang.mk
deleted file mode 100644
index 9fde6ad..0000000
--- a/erlang.mk
+++ /dev/null
@@ -1,741 +0,0 @@
-# Copyright (c) 2013-2014, Loïc Hoguin <essen@ninenines.eu>
-#
-# Permission to use, copy, modify, and/or distribute this software for any
-# purpose with or without fee is hereby granted, provided that the above
-# copyright notice and this permission notice appear in all copies.
-#
-# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
-# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-
-.PHONY: all deps app rel docs tests clean distclean help
-
-ERLANG_MK_VERSION = 1
-
-# Core configuration.
-
-PROJECT ?= $(notdir $(CURDIR))
-PROJECT := $(strip $(PROJECT))
-
-# Verbosity.
-
-V ?= 0
-
-gen_verbose_0 = @echo " GEN   " $@;
-gen_verbose = $(gen_verbose_$(V))
-
-# Core targets.
-
-all:: deps app rel
-
-clean::
-	$(gen_verbose) rm -f erl_crash.dump
-
-distclean:: clean
-
-help::
-	@printf "%s\n" \
-		"erlang.mk (version $(ERLANG_MK_VERSION)) is distributed under the terms of the ISC License." \
-		"Copyright (c) 2013-2014 Loïc Hoguin <essen@ninenines.eu>" \
-		"" \
-		"Usage: [V=1] make [target]" \
-		"" \
-		"Core targets:" \
-		"  all         Run deps, app and rel targets in that order" \
-		"  deps        Fetch dependencies (if needed) and compile them" \
-		"  app         Compile the project" \
-		"  rel         Build a release for this project, if applicable" \
-		"  docs        Build the documentation for this project" \
-		"  tests       Run the tests for this project" \
-		"  clean       Delete temporary and output files from most targets" \
-		"  distclean   Delete all temporary and output files" \
-		"  help        Display this help and exit" \
-		"" \
-		"The target clean only removes files that are commonly removed." \
-		"Dependencies and releases are left untouched." \
-		"" \
-		"Setting V=1 when calling make enables verbose mode."
-
-# Core functions.
-
-define core_http_get
-	wget --no-check-certificate -O $(1) $(2)|| rm $(1)
-endef
-
-# Copyright (c) 2013-2014, Loïc Hoguin <essen@ninenines.eu>
-# This file is part of erlang.mk and subject to the terms of the ISC License.
-
-.PHONY: distclean-deps distclean-pkg pkg-list pkg-search
-
-# Configuration.
-
-DEPS_DIR ?= $(CURDIR)/deps
-export DEPS_DIR
-
-REBAR_DEPS_DIR = $(DEPS_DIR)
-export REBAR_DEPS_DIR
-
-ALL_DEPS_DIRS = $(addprefix $(DEPS_DIR)/,$(DEPS))
-
-ifeq ($(filter $(DEPS_DIR),$(subst :, ,$(ERL_LIBS))),)
-ifeq ($(ERL_LIBS),)
-	ERL_LIBS = $(DEPS_DIR)
-else
-	ERL_LIBS := $(ERL_LIBS):$(DEPS_DIR)
-endif
-endif
-export ERL_LIBS
-
-PKG_FILE2 ?= $(CURDIR)/.erlang.mk.packages.v2
-export PKG_FILE2
-
-PKG_FILE_URL ?= https://raw.githubusercontent.com/ninenines/erlang.mk/master/packages.v2.tsv
-
-# Core targets.
-
-deps:: $(ALL_DEPS_DIRS)
-	@for dep in $(ALL_DEPS_DIRS) ; do \
-		if [ -f $$dep/GNUmakefile ] || [ -f $$dep/makefile ] || [ -f $$dep/Makefile ] ; then \
-			$(MAKE) -C $$dep ; \
-		else \
-			echo "include $(CURDIR)/erlang.mk" | $(MAKE) -f - -C $$dep ; \
-		fi ; \
-	done
-
-distclean:: distclean-deps distclean-pkg
-
-# Deps related targets.
-
-define dep_fetch
-	if [ "$$$$VS" = "git" ]; then \
-		git clone -n -- $$$$REPO $(DEPS_DIR)/$(1); \
-		cd $(DEPS_DIR)/$(1) && git checkout -q $$$$COMMIT; \
-	else \
-		echo "Unknown or invalid dependency: $(1). Please consult the erlang.mk README for instructions." >&2; \
-		exit 78; \
-	fi
-endef
-
-define dep_target
-$(DEPS_DIR)/$(1):
-	@mkdir -p $(DEPS_DIR)
-	@if [ ! -f $(PKG_FILE2) ]; then $(call core_http_get,$(PKG_FILE2),$(PKG_FILE_URL)); fi
-ifeq (,$(dep_$(1)))
-	DEPPKG=$$$$(awk 'BEGIN { FS = "\t" }; $$$$1 == "$(1)" { print $$$$2 " " $$$$3 " " $$$$4 }' $(PKG_FILE2);); \
-	VS=$$$$(echo $$$$DEPPKG | cut -d " " -f1); \
-	REPO=$$$$(echo $$$$DEPPKG | cut -d " " -f2); \
-	COMMIT=$$$$(echo $$$$DEPPKG | cut -d " " -f3); \
-	$(call dep_fetch,$(1))
-else
-	VS=$(word 1,$(dep_$(1))); \
-	REPO=$(word 2,$(dep_$(1))); \
-	COMMIT=$(word 3,$(dep_$(1))); \
-	$(call dep_fetch,$(1))
-endif
-endef
-
-$(foreach dep,$(DEPS),$(eval $(call dep_target,$(dep))))
-
-distclean-deps:
-	$(gen_verbose) rm -rf $(DEPS_DIR)
-
-# Packages related targets.
-
-$(PKG_FILE2):
-	$(call core_http_get,$(PKG_FILE2),$(PKG_FILE_URL))
-
-pkg-list: $(PKG_FILE2)
-	@cat $(PKG_FILE2) | awk 'BEGIN { FS = "\t" }; { print \
-		"Name:\t\t" $$1 "\n" \
-		"Repository:\t" $$3 "\n" \
-		"Website:\t" $$5 "\n" \
-		"Description:\t" $$6 "\n" }'
-
-ifdef q
-pkg-search: $(PKG_FILE2)
-	@cat $(PKG_FILE2) | grep -i ${q} | awk 'BEGIN { FS = "\t" }; { print \
-		"Name:\t\t" $$1 "\n" \
-		"Repository:\t" $$3 "\n" \
-		"Website:\t" $$5 "\n" \
-		"Description:\t" $$6 "\n" }'
-else
-pkg-search:
-	$(error Usage: make pkg-search q=STRING)
-endif
-
-distclean-pkg:
-	$(gen_verbose) rm -f $(PKG_FILE2)
-
-help::
-	@printf "%s\n" "" \
-		"Package-related targets:" \
-		"  pkg-list              List all known packages" \
-		"  pkg-search q=STRING   Search for STRING in the package index"
-
-# Copyright (c) 2013-2014, Loïc Hoguin <essen@ninenines.eu>
-# This file is part of erlang.mk and subject to the terms of the ISC License.
-
-.PHONY: clean-app
-
-# Configuration.
-
-ERLC_OPTS ?= -Werror +debug_info +warn_export_all +warn_export_vars \
-	+warn_shadow_vars +warn_obsolete_guard # +bin_opt_info +warn_missing_spec
-COMPILE_FIRST ?=
-COMPILE_FIRST_PATHS = $(addprefix src/,$(addsuffix .erl,$(COMPILE_FIRST)))
-
-# Verbosity.
-
-appsrc_verbose_0 = @echo " APP   " $(PROJECT).app.src;
-appsrc_verbose = $(appsrc_verbose_$(V))
-
-erlc_verbose_0 = @echo " ERLC  " $(filter %.erl %.core,$(?F));
-erlc_verbose = $(erlc_verbose_$(V))
-
-xyrl_verbose_0 = @echo " XYRL  " $(filter %.xrl %.yrl,$(?F));
-xyrl_verbose = $(xyrl_verbose_$(V))
-
-# Core targets.
-
-app:: erlc-include ebin/$(PROJECT).app
-	$(eval MODULES := $(shell find ebin -type f -name \*.beam \
-		| sed "s/ebin\//'/;s/\.beam/',/" | sed '$$s/.$$//'))
-	@if [ -z "$$(grep -E '^[^%]*{modules,' src/$(PROJECT).app.src)" ]; then \
-		echo "Empty modules entry not found in $(PROJECT).app.src. Please consult the erlang.mk README for instructions." >&2; \
-		exit 1; \
-	fi
-	$(appsrc_verbose) cat src/$(PROJECT).app.src \
-		| sed "s/{modules,[[:space:]]*\[\]}/{modules, \[$(MODULES)\]}/" \
-		> ebin/$(PROJECT).app
-
-define compile_erl
-	$(erlc_verbose) erlc -v $(ERLC_OPTS) -o ebin/ \
-		-pa ebin/ -I include/ $(COMPILE_FIRST_PATHS) $(1)
-endef
-
-define compile_xyrl
-	$(xyrl_verbose) erlc -v -o ebin/ $(1)
-	$(xyrl_verbose) erlc $(ERLC_OPTS) -o ebin/ ebin/*.erl
-	@rm ebin/*.erl
-endef
-
-ifneq ($(wildcard src/),)
-ebin/$(PROJECT).app::
-	@mkdir -p ebin/
-
-ebin/$(PROJECT).app:: $(shell find src -type f -name \*.erl) \
-		$(shell find src -type f -name \*.core)
-	$(if $(strip $?),$(call compile_erl,$?))
-
-ebin/$(PROJECT).app:: $(shell find src -type f -name \*.xrl) \
-		$(shell find src -type f -name \*.yrl)
-	$(if $(strip $?),$(call compile_xyrl,$?))
-endif
-
-clean:: clean-app
-
-# Extra targets.
-
-erlc-include:
-	-@if [ -d ebin/ ]; then \
-		find include/ src/ -type f -name \*.hrl -newer ebin -exec touch $(shell find src/ -type f -name "*.erl") \; 2>/dev/null || echo -n; \
-	fi
-
-clean-app:
-	$(gen_verbose) rm -rf ebin/
-
-# Copyright (c) 2014, Loïc Hoguin <essen@ninenines.eu>
-# This file is part of erlang.mk and subject to the terms of the ISC License.
-
-.PHONY: bootstrap bootstrap-lib bootstrap-rel new list-templates
-
-# Core targets.
-
-help::
-	@printf "%s\n" "" \
-		"Bootstrap targets:" \
-		"  bootstrap          Generate a skeleton of an OTP application" \
-		"  bootstrap-lib      Generate a skeleton of an OTP library" \
-		"  bootstrap-rel      Generate the files needed to build a release" \
-		"  new t=TPL n=NAME   Generate a module NAME based on the template TPL" \
-		"  list-templates     List available templates"
-
-# Bootstrap templates.
-
-bs_appsrc = "{application, $(PROJECT), [" \
-	"	{description, \"\"}," \
-	"	{vsn, \"0.1.0\"}," \
-	"	{modules, []}," \
-	"	{registered, []}," \
-	"	{applications, [" \
-	"		kernel," \
-	"		stdlib" \
-	"	]}," \
-	"	{mod, {$(PROJECT)_app, []}}," \
-	"	{env, []}" \
-	"]}."
-bs_appsrc_lib = "{application, $(PROJECT), [" \
-	"	{description, \"\"}," \
-	"	{vsn, \"0.1.0\"}," \
-	"	{modules, []}," \
-	"	{registered, []}," \
-	"	{applications, [" \
-	"		kernel," \
-	"		stdlib" \
-	"	]}" \
-	"]}."
-bs_Makefile = "PROJECT = $(PROJECT)" \
-	"include erlang.mk"
-bs_app = "-module($(PROJECT)_app)." \
-	"-behaviour(application)." \
-	"" \
-	"-export([start/2])." \
-	"-export([stop/1])." \
-	"" \
-	"start(_Type, _Args) ->" \
-	"	$(PROJECT)_sup:start_link()." \
-	"" \
-	"stop(_State) ->" \
-	"	ok."
-bs_relx_config = "{release, {$(PROJECT)_release, \"1\"}, [$(PROJECT)]}." \
-	"{extended_start_script, true}." \
-	"{sys_config, \"rel/sys.config\"}." \
-	"{vm_args, \"rel/vm.args\"}."
-bs_sys_config = "[" \
-	"]."
-bs_vm_args = "-name $(PROJECT)@127.0.0.1" \
-	"-setcookie $(PROJECT)" \
-	"-heart"
-# Normal templates.
-tpl_supervisor = "-module($(n))." \
-	"-behaviour(supervisor)." \
-	"" \
-	"-export([start_link/0])." \
-	"-export([init/1])." \
-	"" \
-	"start_link() ->" \
-	"	supervisor:start_link({local, ?MODULE}, ?MODULE, [])." \
-	"" \
-	"init([]) ->" \
-	"	Procs = []," \
-	"	{ok, {{one_for_one, 1, 5}, Procs}}."
-tpl_gen_server = "-module($(n))." \
-	"-behaviour(gen_server)." \
-	"" \
-	"%% API." \
-	"-export([start_link/0])." \
-	"" \
-	"%% gen_server." \
-	"-export([init/1])." \
-	"-export([handle_call/3])." \
-	"-export([handle_cast/2])." \
-	"-export([handle_info/2])." \
-	"-export([terminate/2])." \
-	"-export([code_change/3])." \
-	"" \
-	"-record(state, {" \
-	"})." \
-	"" \
-	"%% API." \
-	"" \
-	"-spec start_link() -> {ok, pid()}." \
-	"start_link() ->" \
-	"	gen_server:start_link(?MODULE, [], [])." \
-	"" \
-	"%% gen_server." \
-	"" \
-	"init([]) ->" \
-	"	{ok, \#state{}}." \
-	"" \
-	"handle_call(_Request, _From, State) ->" \
-	"	{reply, ignored, State}." \
-	"" \
-	"handle_cast(_Msg, State) ->" \
-	"	{noreply, State}." \
-	"" \
-	"handle_info(_Info, State) ->" \
-	"	{noreply, State}." \
-	"" \
-	"terminate(_Reason, _State) ->" \
-	"	ok." \
-	"" \
-	"code_change(_OldVsn, State, _Extra) ->" \
-	"	{ok, State}."
-tpl_cowboy_http = "-module($(n))." \
-	"-behaviour(cowboy_http_handler)." \
-	"" \
-	"-export([init/3])." \
-	"-export([handle/2])." \
-	"-export([terminate/3])." \
-	"" \
-	"-record(state, {" \
-	"})." \
-	"" \
-	"init(_, Req, _Opts) ->" \
-	"	{ok, Req, \#state{}}." \
-	"" \
-	"handle(Req, State=\#state{}) ->" \
-	"	{ok, Req2} = cowboy_req:reply(200, Req)," \
-	"	{ok, Req2, State}." \
-	"" \
-	"terminate(_Reason, _Req, _State) ->" \
-	"	ok."
-tpl_cowboy_loop = "-module($(n))." \
-	"-behaviour(cowboy_loop_handler)." \
-	"" \
-	"-export([init/3])." \
-	"-export([info/3])." \
-	"-export([terminate/3])." \
-	"" \
-	"-record(state, {" \
-	"})." \
-	"" \
-	"init(_, Req, _Opts) ->" \
-	"	{loop, Req, \#state{}, 5000, hibernate}." \
-	"" \
-	"info(_Info, Req, State) ->" \
-	"	{loop, Req, State, hibernate}." \
-	"" \
-	"terminate(_Reason, _Req, _State) ->" \
-	"	ok."
-tpl_cowboy_rest = "-module($(n))." \
-	"" \
-	"-export([init/3])." \
-	"-export([content_types_provided/2])." \
-	"-export([get_html/2])." \
-	"" \
-	"init(_, _Req, _Opts) ->" \
-	"	{upgrade, protocol, cowboy_rest}." \
-	"" \
-	"content_types_provided(Req, State) ->" \
-	"	{[{{<<\"text\">>, <<\"html\">>, '_'}, get_html}], Req, State}." \
-	"" \
-	"get_html(Req, State) ->" \
-	"	{<<\"<html><body>This is REST!</body></html>\">>, Req, State}."
-tpl_cowboy_ws = "-module($(n))." \
-	"-behaviour(cowboy_websocket_handler)." \
-	"" \
-	"-export([init/3])." \
-	"-export([websocket_init/3])." \
-	"-export([websocket_handle/3])." \
-	"-export([websocket_info/3])." \
-	"-export([websocket_terminate/3])." \
-	"" \
-	"-record(state, {" \
-	"})." \
-	"" \
-	"init(_, _, _) ->" \
-	"	{upgrade, protocol, cowboy_websocket}." \
-	"" \
-	"websocket_init(_, Req, _Opts) ->" \
-	"	Req2 = cowboy_req:compact(Req)," \
-	"	{ok, Req2, \#state{}}." \
-	"" \
-	"websocket_handle({text, Data}, Req, State) ->" \
-	"	{reply, {text, Data}, Req, State};" \
-	"websocket_handle({binary, Data}, Req, State) ->" \
-	"	{reply, {binary, Data}, Req, State};" \
-	"websocket_handle(_Frame, Req, State) ->" \
-	"	{ok, Req, State}." \
-	"" \
-	"websocket_info(_Info, Req, State) ->" \
-	"	{ok, Req, State}." \
-	"" \
-	"websocket_terminate(_Reason, _Req, _State) ->" \
-	"	ok."
-tpl_ranch_protocol = "-module($(n))." \
-	"-behaviour(ranch_protocol)." \
-	"" \
-	"-export([start_link/4])." \
-	"-export([init/4])." \
-	"" \
-	"-type opts() :: []." \
-	"-export_type([opts/0])." \
-	"" \
-	"-record(state, {" \
-	"	socket :: inet:socket()," \
-	"	transport :: module()" \
-	"})." \
-	"" \
-	"start_link(Ref, Socket, Transport, Opts) ->" \
-	"	Pid = spawn_link(?MODULE, init, [Ref, Socket, Transport, Opts])," \
-	"	{ok, Pid}." \
-	"" \
-	"-spec init(ranch:ref(), inet:socket(), module(), opts()) -> ok." \
-	"init(Ref, Socket, Transport, _Opts) ->" \
-	"	ok = ranch:accept_ack(Ref)," \
-	"	loop(\#state{socket=Socket, transport=Transport})." \
-	"" \
-	"loop(State) ->" \
-	"	loop(State)."
-
-# Plugin-specific targets.
-
-bootstrap:
-ifneq ($(wildcard src/),)
-	$(error Error: src/ directory already exists)
-endif
-	@printf "%s\n" $(bs_Makefile) > Makefile
-	@mkdir src/
-	@printf "%s\n" $(bs_appsrc) > src/$(PROJECT).app.src
-	@printf "%s\n" $(bs_app) > src/$(PROJECT)_app.erl
-	$(eval n := $(PROJECT)_sup)
-	@printf "%s\n" $(tpl_supervisor) > src/$(PROJECT)_sup.erl
-
-bootstrap-lib:
-ifneq ($(wildcard src/),)
-	$(error Error: src/ directory already exists)
-endif
-	@printf "%s\n" $(bs_Makefile) > Makefile
-	@mkdir src/
-	@printf "%s\n" $(bs_appsrc_lib) > src/$(PROJECT).app.src
-
-bootstrap-rel:
-ifneq ($(wildcard relx.config),)
-	$(error Error: relx.config already exists)
-endif
-ifneq ($(wildcard rel/),)
-	$(error Error: rel/ directory already exists)
-endif
-	@printf "%s\n" $(bs_relx_config) > relx.config
-	@mkdir rel/
-	@printf "%s\n" $(bs_sys_config) > rel/sys.config
-	@printf "%s\n" $(bs_vm_args) > rel/vm.args
-
-new:
-ifeq ($(wildcard src/),)
-	$(error Error: src/ directory does not exist)
-endif
-ifndef t
-	$(error Usage: make new t=TEMPLATE n=NAME)
-endif
-ifndef tpl_$(t)
-	$(error Unknown template)
-endif
-ifndef n
-	$(error Usage: make new t=TEMPLATE n=NAME)
-endif
-	@printf "%s\n" $(tpl_$(t)) > src/$(n).erl
-
-list-templates:
-	@echo Available templates: $(sort $(patsubst tpl_%,%,$(filter tpl_%,$(.VARIABLES))))
-
-# Copyright (c) 2013-2014, Loïc Hoguin <essen@ninenines.eu>
-# This file is part of erlang.mk and subject to the terms of the ISC License.
-
-.PHONY: build-ct-deps build-ct-suites tests-ct clean-ct distclean-ct
-
-# Configuration.
-
-CT_OPTS ?=
-ifneq ($(wildcard test/),)
-	CT_SUITES ?= $(sort $(subst _SUITE.erl,,$(shell find test -type f -name \*_SUITE.erl -exec basename {} \;)))
-else
-	CT_SUITES ?=
-endif
-
-TEST_ERLC_OPTS ?= +debug_info +warn_export_vars +warn_shadow_vars +warn_obsolete_guard
-TEST_ERLC_OPTS += -DTEST=1 -DEXTRA=1 +'{parse_transform, eunit_autoexport}'
-
-# Core targets.
-
-tests:: tests-ct
-
-clean:: clean-ct
-
-distclean:: distclean-ct
-
-help::
-	@printf "%s\n" "" \
-		"All your common_test suites have their associated targets." \
-		"A suite named http_SUITE can be ran using the ct-http target."
-
-# Plugin-specific targets.
-
-ALL_TEST_DEPS_DIRS = $(addprefix $(DEPS_DIR)/,$(TEST_DEPS))
-
-CT_RUN = ct_run \
-	-no_auto_compile \
-	-noshell \
-	-pa $(realpath ebin) $(DEPS_DIR)/*/ebin \
-	-dir test \
-	-logdir logs
-
-$(foreach dep,$(TEST_DEPS),$(eval $(call dep_target,$(dep))))
-
-build-ct-deps: $(ALL_TEST_DEPS_DIRS)
-	@for dep in $(ALL_TEST_DEPS_DIRS) ; do $(MAKE) -C $$dep; done
-
-build-ct-suites: build-ct-deps
-	$(gen_verbose) erlc -v $(TEST_ERLC_OPTS) -o test/ \
-		$(wildcard test/*.erl test/*/*.erl) -pa ebin/
-
-tests-ct: ERLC_OPTS = $(TEST_ERLC_OPTS)
-tests-ct: clean deps app build-ct-suites
-	@if [ -d "test" ] ; \
-	then \
-		mkdir -p logs/ ; \
-		$(CT_RUN) -suite $(addsuffix _SUITE,$(CT_SUITES)) $(CT_OPTS) ; \
-	fi
-	$(gen_verbose) rm -f test/*.beam
-
-define ct_suite_target
-ct-$(1): ERLC_OPTS = $(TEST_ERLC_OPTS)
-ct-$(1): clean deps app build-ct-suites
-	@if [ -d "test" ] ; \
-	then \
-		mkdir -p logs/ ; \
-		$(CT_RUN) -suite $(addsuffix _SUITE,$(1)) $(CT_OPTS) ; \
-	fi
-	$(gen_verbose) rm -f test/*.beam
-endef
-
-$(foreach test,$(CT_SUITES),$(eval $(call ct_suite_target,$(test))))
-
-clean-ct:
-	$(gen_verbose) rm -rf test/*.beam
-
-distclean-ct:
-	$(gen_verbose) rm -rf logs/
-
-# Copyright (c) 2013-2014, Loïc Hoguin <essen@ninenines.eu>
-# This file is part of erlang.mk and subject to the terms of the ISC License.
-
-.PHONY: plt distclean-plt dialyze
-
-# Configuration.
-
-DIALYZER_PLT ?= $(CURDIR)/.$(PROJECT).plt
-export DIALYZER_PLT
-
-PLT_APPS ?=
-DIALYZER_OPTS ?= -Werror_handling -Wrace_conditions \
-	-Wunmatched_returns # -Wunderspecs
-
-# Core targets.
-
-distclean:: distclean-plt
-
-help::
-	@printf "%s\n" "" \
-		"Dialyzer targets:" \
-		"  plt         Build a PLT file for this project" \
-		"  dialyze     Analyze the project using Dialyzer"
-
-# Plugin-specific targets.
-
-$(DIALYZER_PLT): deps app
-	@dialyzer --build_plt --apps erts kernel stdlib $(PLT_APPS) $(ALL_DEPS_DIRS)
-
-plt: $(DIALYZER_PLT)
-
-distclean-plt:
-	$(gen_verbose) rm -f $(DIALYZER_PLT)
-
-ifneq ($(wildcard $(DIALYZER_PLT)),)
-dialyze:
-else
-dialyze: $(DIALYZER_PLT)
-endif
-	@dialyzer --no_native --src -r src $(DIALYZER_OPTS)
-
-# Copyright (c) 2013-2014, Loïc Hoguin <essen@ninenines.eu>
-# This file is part of erlang.mk and subject to the terms of the ISC License.
-
-# Verbosity.
-
-dtl_verbose_0 = @echo " DTL   " $(filter %.dtl,$(?F));
-dtl_verbose = $(dtl_verbose_$(V))
-
-# Core targets.
-
-define compile_erlydtl
-	$(dtl_verbose) erl -noshell -pa ebin/ $(DEPS_DIR)/erlydtl/ebin/ -eval ' \
-		Compile = fun(F) -> \
-			Module = list_to_atom( \
-				string:to_lower(filename:basename(F, ".dtl")) ++ "_dtl"), \
-			erlydtl:compile(F, Module, [{out_dir, "ebin/"}]) \
-		end, \
-		_ = [Compile(F) || F <- string:tokens("$(1)", " ")], \
-		init:stop()'
-endef
-
-ifneq ($(wildcard src/),)
-ebin/$(PROJECT).app:: $(shell find templates -type f -name \*.dtl 2>/dev/null)
-	$(if $(strip $?),$(call compile_erlydtl,$?))
-endif
-
-# Copyright (c) 2013-2014, Loïc Hoguin <essen@ninenines.eu>
-# This file is part of erlang.mk and subject to the terms of the ISC License.
-
-.PHONY: distclean-edoc
-
-# Configuration.
-
-EDOC_OPTS ?=
-
-# Core targets.
-
-docs:: distclean-edoc
-	$(gen_verbose) erl -noshell \
-		-eval 'edoc:application($(PROJECT), ".", [$(EDOC_OPTS)]), init:stop().'
-
-distclean:: distclean-edoc
-
-# Plugin-specific targets.
-
-distclean-edoc:
-	$(gen_verbose) rm -f doc/*.css doc/*.html doc/*.png doc/edoc-info
-
-# Copyright (c) 2013-2014, Loïc Hoguin <essen@ninenines.eu>
-# This file is part of erlang.mk and subject to the terms of the ISC License.
-
-.PHONY: relx-rel distclean-relx-rel distclean-relx
-
-# Configuration.
-
-RELX_CONFIG ?= $(CURDIR)/relx.config
-
-RELX ?= $(CURDIR)/relx
-export RELX
-
-RELX_URL ?= https://github.com/erlware/relx/releases/download/v1.0.2/relx
-RELX_OPTS ?=
-RELX_OUTPUT_DIR ?= _rel
-
-ifeq ($(firstword $(RELX_OPTS)),-o)
-	RELX_OUTPUT_DIR = $(word 2,$(RELX_OPTS))
-else
-	RELX_OPTS += -o $(RELX_OUTPUT_DIR)
-endif
-
-# Core targets.
-
-ifneq ($(wildcard $(RELX_CONFIG)),)
-rel:: distclean-relx-rel relx-rel
-endif
-
-distclean:: distclean-relx-rel distclean-relx
-
-# Plugin-specific targets.
-
-define relx_fetch
-	$(call core_http_get,$(RELX),$(RELX_URL))
-	chmod +x $(RELX)
-endef
-
-$(RELX):
-	@$(call relx_fetch)
-
-relx-rel: $(RELX)
-	@$(RELX) -c $(RELX_CONFIG) $(RELX_OPTS)
-
-distclean-relx-rel:
-	$(gen_verbose) rm -rf $(RELX_OUTPUT_DIR)
-
-distclean-relx:
-	$(gen_verbose) rm -rf $(RELX)
diff --git a/rebar.config b/rebar.config
new file mode 100644
index 0000000..2e229e5
--- /dev/null
+++ b/rebar.config
@@ -0,0 +1,7 @@
+%% -*- mode: erlang -*-
+
+{relx, [{release, {riichi, "0.0.1"},
+         [riichi]},
+        {dev_mode, true},
+        {include_erts, false},
+        {extended_start_script, true}]}.