Add gemfiles for windows.
Add signin tests.
Add new sessions controller so that our tests pass
Add invalid signin test
Add tests for valid signin
Forgot that we don't have a Sessions model, so put string for sign in in the controller.
Sign in mockup
Add test to make sure that flash message doesn't persist.
Handle invalid signin
Add functionality to signin link in header.
Add test to have user respond to remember token
Add remember token to database.
Add test to make sure that when saving a user we generate a remember token.
Add a callback to create a render token before a save.
Add signin functionality
Add test to check whether or not signout works...
Also make sure that when we sign out we have the sign in link back...
Implement signout
Remove debug cruft
Make test that checks the homepage signup links upon signin and signout