It adds Home controller.
routes.db modified with resources :cats and root address changeg to home#index.

On branch master
Changes to be committed:
	new file:   app/assets/javascripts/home.js.coffee
	new file:   app/assets/stylesheets/home.css.scss
	new file:   app/controllers/home_controller.rb
	new file:   app/helpers/home_helper.rb
	new file:   app/views/home/index.html.erb
	modified:   config/routes.rb
	new file:   db/migrate/20141008090244_add_fields_to_cat.rb
	new file:   test/controllers/home_controller_test.rb
	new file:   test/helpers/home_helper_test.rb