Created Store index.

new file:   app/assets/javascripts/store.js.coffee
new file:   app/assets/stylesheets/store.css
new file:   app/controllers/store_controller.rb
new file:   app/helpers/store_helper.rb
new file:   app/views/store/index.html.erb
modified:   config/routes.rb
new file:   test/controllers/store_controller_test.rb
new file:   test/helpers/store_helper_test.rb
Added products to the Home page.
Display product prices as currency on Home page.