Add debug method to application.html.erb per listing 7.1.1.
add box_sizing mixin and styling rules for .debug_dump per listing 7.2.
Add REST resources for users per listing 7.3.
Add users/show.html.erb stub and add 'show' controller.
Install factory_girl_rails gem.
Configure a FactoryGirl user factory per listing 7.8.
Add specs for user profile pages per listing 7.9.
Modify users/show.html.erb to include title per listing 7.10.
Lower SecurePassword's min_cost to make testing more efficient (per listing 7.11).
Add 'gravatar_for' function to users/show.html.erb per listing 7.12.
Define 'gravatar_for' in users_helpers.rb per listing 7.13.
Modify users/show.html.erb: inset content in an aside per listing 7.14.
Modify styling per listing 7.15.
Add signup specs to user_pages_spec.rb per listing 7.16.
Add form to users/new.html.erb per listing 7.17.
Have users 'new' controller instantiat a new user object per listing 7.18.
Add styling for forms per listing 7.19.
Add preliminary users 'create' controller method per listing 7.21.
Modify users_controller.rb per listing 7.22.
Add _error_messages.html.erb partial per listing 7.24.