new file:   app/assets/javascripts/comments.js.coffee
	new file:   app/assets/stylesheets/comments.css.scss
	new file:   app/controllers/comments_controller.rb
	new file:   app/helpers/comments_helper.rb
	modified:   app/views/posts/show.html.erb
	new file:   test/controllers/comments_controller_test.rb
	new file:   test/helpers/comments_helper_test.rb