Add app/controllers/users_controller.rb
Add app/views/pages/_header.html.erb
Add app/views/users/edit.html.erb
Add db/schema.rb
Add spec/controllers/users_controller_spec.rb
Add spec/factories/users.rb
Add db/migrate/20140710002602_add_username_to_user.rb
Add db/migrate/20140710002724_add_age_to_user.rb