add shoulda
add factorygirl
add basic model spec for user
add user factory
add capybara DSL and focus to spec_helper
add request spec for users
add resources route (albeit limited) for users
move into partial and use image_tag for rss logo to fix bug
move images into partial
Update header text for signed in user
move methods into a sessions helper
add signout method, and current_user? method. Add signout to sessions controller.
add a gravatar helper
add flash message display
add user profile page
add styles to support flash messages and buttons