Add current user method to appcontroller
add method to find users and prevent duplicate creations
add method to find users on login by github uid
remove current user helper method from application helper put in the application controller
remove superfluous helpers
Alter method for creating user that reflects return has from the API
add test for current user method
update schema based on new migrations
add migrations for users
Merge remote-tracking branch 'origin/master' into repository_api

Conflicts:
	app/views/users/index.html.erb
Merge pull request #34 from alexung/user_create_login

User create login