added debub information to the site layout
added css for a debug box using a Sass mixin
 added test for title and user name, added title and h1 tag to user profile page
Redefine the Bcrypt cost factor in a test environment
gravatar for helper method, added user show view with name and gravatar, added rails.png to image assets
added css/sass for the gravatar image and user name
added basic tests for signing up users
added a user signup form
added css/sass for the forms
created an action that can handle signup failure, but not success
added error messages with css, added the redirect for a valid signup form
Finish user signup