generated sessions controller
added routes for sessions
added tests for sign in
added code for handling sign in success and failure
wrote tests for sign in feature
added form and link for sign in
wrote migration adding a remember token to users model
added remeber token creation to user model, with appropiate tests
finished authentication tests with rspec
sign in and sign out functionality are complete, with conditional links in header relying on helper methods
Merge pull request #2 from chriswright47/sign-in-out

Sign in out