rails generate model listing title:string description:text
rails generate controller listings
resources :listings
ListingsController#index
ListingsController#show
ListingsController#new and #create
validates_presence_of :title, :body
Test for ListingsController#index
Switch to using fixtures
Introduce assert_select
Test ListingsController#show
Tests for ListingsController #new and #create
Introduce partials while building out ListingsController#edit and ListingsController#update
Set root route
Added a layout

Available at: https://gist.github.com/636546
Added devise to the Gemfile.
rails generate devise:install and add recommended code
rails generate devise user
Fixed broken fixtures from Devise
Require a signed in user for listing crud