Add Debug in Dev env.  Add User resource.  Add 'show' action.  Add first FactoryGirl factory for ':user', testing with first factory via factories.rb.  Speed up tests by lowering bcrypt cost function.
use gravatar_for method.  create gravatar_for helper (aka method).
Gravitar now sidebar.
/signup works with INvalid info.
/signup works with valid info, new user created.  Upon creation, redirect_to user's profile page.
/signup works with valid info, new user created.  Upon creation, redirect_to user's profile page.
created 'success' flash message, which appears when user complete signup.
Add SSL to all heroku deployment (production environment.