modified:   app/controllers/application_controller.rb
	modified:   app/controllers/categories_controller.rb
	modified:   app/controllers/items_controller.rb
	new file:   app/controllers/orders_controller.rb
	new file:   app/helpers/orders_helper.rb
	new file:   app/mailers/orders_mailer.rb
	modified:   app/models/cart.rb
	new file:   app/models/order.rb