created migrate & changed sorcery.rb
added signin for Github. User manual reg, after tied acc github
rewrited settings for sorcery external Github. Now gem created new user, but name -> email
added authorized for twitter
deleted gem protected_attributes and her settings
2 try login from twitter, facebook
GH, TW, FB - successed login
added strong_parametrs to oauths_controller for Sorcery
added settings.yml for test ENV
Merge branch 'oauth'