A barebones Node.js app using Express 4.
This application supports the Getting Started with Node on Heroku article - check it out.
Make sure you have Node.js and the Heroku CLI installed.
$ git clone https://github.com/heroku/node-js-getting-started.git # or clone your own fork
$ cd node-js-getting-started
$ npm install
$ npm start
Your app should now be running on localhost:5000.