Bundle 2013-06-14

https://github.com/rails/rails/compare/9fc574fdea359963679e2385e04c23ff007f25e9...90a6059dd2df748e002618eaacab6b46f50d4bfc
https://github.com/jonleighton/spring/compare/e11985007fbe3346704b3934de8b85361bdcbf06...v0.0.9
https://github.com/intridea/multi_json/compare/v1.7.6...v1.7.7