For more information see the article explaining the application:

https://liamkaufman.com/blog/2012/02/25/adding_real-time_to_rails_with_socket.IO_nodejs_and_backbonejs_with_demo/

Demo: https://node-chatty.herokuapp.com/chatty

Node Server: https://github.com/liamks/Chatty-Node-Server

The basic Backbone rails integration template comes from another project:

https://github.com/liamks/Backbone-On-Rails