added debug info when in development
added a users resource
added the factory_girl gem and created new tests for validating the user model
added a gravatar helper method to retrieve a users gravater
added styling to show the users gravatar
created tests for creating an invalid user and a valid user
created the users sign up form on the sign up page.
added strong parameters for creating a new user
added error message tests as part of excercise number 2 in chapter 7
removed tests that were in the wrong spec
added a partial to render error messages
added the actual partial error message view
added styling to the error messages and form
fixed a spec issue
added logic to handle a successful signup and then redirecting the user to their profile page
added logic to set the size of the gravatar image which is part of excercise 1 in chapter 7
finish user signup