rebar3的学习例子，包含eper工程和sync工程。
编译： make
release： make release
运行程序： cd _build/default/rel/test_app/bin ./test_app console
运行common_test： rebar3 ct
plugins:
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'rebar3 run' will start the release console, instead of having to run _build/default/rel//bin/ console
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Running 'rebar3 auto' will start the shell the same as running rebar3 shell, but will be listening for file changes in your project's application source directories. When a file is change it will message the rebar3 agent to run compile and reload modules.