http://yatmsu.hatenablog.com/entry/2014/01/04/Rails%E3%81%AE%E3%82%A8%E3%83%A9%E3%83%BC%E3%83%8F%E3%83%B3%E3%83%89%E3%83%AA%E3%83%B3%E3%82%B0http://qiita.com/ma2ge/items/938d9f8f4839eb336318http://qiita.com/ma2ge/items/938d9f8f4839eb336318…

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