tdtds/massr — pull request #134 by rinrinne (2013-02-24 15:53:04+00:00)
Title: heroku gem -> heroku toolbelt

heroku gem は deprecate だそうなのでドキュメント修正
https://blog.heroku.com/archives/2012/10/15/upgrading-to-the-heroku-toolbelt/