Elixir v1.0.5で'lib/script.ex:57: warning: variable args is unused'というエラーが出たので．

# Elixir v1.0.5で'lib/script.ex:57: warning: variable args is unused'というエラーが出たので対応．

# Elixir
$ elixir -v
> Elixir 1.0.5

# error
$ mix escript.build
lib/script.ex:57: warning: variable args is unused
Compiled lib/script.ex
Generated script.app
Consolidated Timex.Date.Convert
Consolidated Access
Consolidated Collectable
Consolidated Enumerable
Consolidated Inspect
Consolidated List.Chars
Consolidated Range.Iterator
Consolidated String.Chars
Consolidated protocols written to _build/dev/consolidated
* (Mix) Could not generate escript, please set :main_module in your project configuration (under `:escript` option) to a module that implements main/1*

$ vi mix.exs
++ escript: [main_module: SCRIPT_NAME]
$ mix escript.build
# ディレクトリ内にコマンドが作られる