User edit working (except commented out 'Sign out' link check in user_pages_spec.rb.
Add sign_in user to before block so that tests pass through section 9.1.1
Check for logged-in status.
Check for correct user.  Passes all tests through section 9.2.2
Add 'Friendly Forwarding' by storing target url in session.
Complete section 9.2.*
Add Users index code.
Complete through section 9.3.1
Generate fake users using Faker and rake task
Add pagination
Factor to render @users directly using _user.html.haml partial
Finish user edit, update, index, and destroy actions