Merge pull request #7 from KaFaiC/dev

Add spec for loginController, tutorController and pw-check directive
merge
change the logic of switching user role in sign up form
show and hide button when switching sign up form
refactor the signup.html
setup angular multi select
binding mutl select to sign up controller $scope.user
unable to hit rails users controller
merged
sign up form
merge
user controller create
merged
creating featured_tutors
Add seed data
Add Create action for UsersController
remove angular multi select into bower
add tutorlistcontroller
Add tutor_spec
Merge branch 'dev' of https://github.com/jccf091/tutorhub into dev