http://qiita.com/konpyu/items/3ba3774bcde226d7d07d https://github.com/blog/517-unicorn http://qiita.com/hiroki_y/items/06f5780543bec988d8b7 http://www.rokurofire.info/2013/11/20/sinatra_builtenv/#num7 http://xyk.hatenablog.com/entry/2014/1…