Generate Sessions controller with no actions and integration_test authentication_pages
Generate migration add_remember_token_to_users to remember user even after browser is closed
Generate migration add_remember_token_to_users to remember user even after browser is closed
unkwon commit
save and ready switch branch
session implementation complete
Add header to change when signin to session
Finish sign in
Merge branch 'sign-in-out'

Merge is for completion of the sign-in-out process.
Fixed merge conflics in users controller and _header.html.erb