First draft for facebook login
FB login cycle 1 complete

Now able to use facebook-login through passport.
3000 logs in to FB and redirects (currently hard-coded) to localhost:8080
Code to be cleaned up. Hard-coded values to be removed.
Merge branch 'master' of github.com:amitdotpatel/knowledgestoreapi into fb-login

Conflicts:
	README.md
	config/config.js
	config/routes.js
	controllers/users.js
passport-local and passport-facebook login enabled.