This is a simple demonstration of backbone.js in the form a of a dumb notetaking app.
The server is sinatra so you will need to install ruby and the sinatra, sinatra-contrib, and json gems.
once you have all of that execute
ruby app.rb
Then you need to navigate a browser to the the url it specifies.
The app just reads a json file and lists the notes in it.
If you click on a note you will see a note detail view.
If you click on a note detail view you will see an edit view.