Merge pull request #6 from KaFaiC/dev

Add authentication
remove user_params in seesion controller
rename var app controller servers directive
password check driective
add tutorlsefeaturecontroller sepc
config angular for rails defeault csrf protection
Add teaspoon for angularjs testing and add tutorlistcontroller spec
user able to signout, session controller spec for singout
Add loginController spec
Merge remote-tracking branch 'upstream/dev' into dev

Conflicts:
	Gemfile
	app/assets/javascripts/app.js
	app/assets/javascripts/controllers/tutorsController.js
	spec/javascripts/controllers/tutorsController_spec.js
	spec/javascripts/spec_helper.js
	vendor/assets/bower.json
Add pwCheck directive