Fixed a typo
Updated clockwork sms example code
Merge remote-tracking branch 'origin/master'

* origin/master:
  Fixed a typo
Added a brief comment explanation of how passport strategy works
Added a redirection to referrer page
referrer redirect

Redirect the page after login to the referrer page
Updated dependencies
Removed TODO section
Code refactoring of redirect to last URL
Renamed Referer to Referrer
Merge branch 'JahlomP-master'

* JahlomP-master:
  Renamed Referer to Referrer
  Code refactoring of redirect to last URL
  Removed TODO section
  referrer redirect
  Added a redirection to referrer page
Removed zombie.js tests (causing install problems for Windows users)
Dropped _test postfix from test files
Updated User model tests
Updated test for creating a duplicate user
Add additional supertest tests for /signup, /api, /contact and /login
Changed layout title to Hackathon Starter
Placed single sign-in buttons at the bottom of the login form
Update package.json
Updated TO and SUBJECT nodemailer fields on forgot password controller