Create Sessions controller and Signin page
Add tests for failed signin and use flash.now[]
-a
Revert "-a"

This reverts commit 78c15b03c2330d8732e48b2bbe8a3355e85965ac.

wanted to add a comment to the commit
Revert "Revert "-a""

This reverts commit 5ba576ba86c3220a80b7f711a9178b58b7f4210c.
Add a remember_token attribut for the session cookie to our User model
Add sign_out functionality and view choosing.  Add spec utilites to decouple test and implementation.