unenroll front-end fixed
Added specs
Updated models logic
Merge branch 'models' of https://github.com/dkumar/MeetMyClassmates into models

Conflicts:
	app/controllers/users_controller.rb
	app/models/user.rb
	lib/validation.rb
Add course fix
quickfix so that unenrolling works
Merge branch 'models' of https://github.com/dkumar/MeetMyClassmates
added readme
added readme
Merge branch 'models' of https://github.com/dkumar/MeetMyClassmates into models
Merge branch 'models'