created the users controller and associated files #10
user model tests #10
email validation and test codes #10
password validation and test codes #10
added show action in user's controller and corresponding view  #10
installed Factory Girl gem  #10
tests for user's profile page (show) #10
added custom css to profile page #10
finished user sign up #10
Add SSL in production
fixes #10
Merge pull request #11 from samuelralak/feature/10-user-sign-up

Feature/10 user sign up