Add: bootstrap css and js
Add: Create model 'item'
Change: attr_accessible for all fields in item model
Add: validates presence for all fields in item model
Add: create controller 'items'
Add: index action in items controller
Add: resources items in route.rb
Add: view for items controller index action
Add: action new to items controller
Add: instal gem simple_form with --bootstrap
Add: action create in items controller
Add: view items#new
Add: action show to items_controller
Add: items_controller#edit
Add: vies/items/edit.html.erb
Add: items_controller#update
Add: items_controller#destroy
Add: views/index.html.erb#button_to method: :delete
Add: User model via devise
Ref: remove e-mail and password form from layouts/application.html.erb