http://www.ownway.info/Ruby/index.php?heroku%2Fhow%2Fmanagement%2Faccount http://d.hatena.ne.jp/mercystage/20130501/1367397215 http://d.hatena.ne.jp/ayumuaizawa/20120120 http://blog.livedoor.jp/maru_tak/archives/51251021.html http://journa…