How to heroku

app.js

var port = process.env.PORT || 5000;

....

app.listen(port, function() {
  console.log("Listening on " + port);
});

Procfile

# create this file in your project root
web: node <entry point file here>

EXAMPLE: 
web: node app.js

shell.sh

#if you haven't already
# download and install the heroku toolbelt

cd /your/project
# if you don't have git already initiated for the project
$ git init

$ heroku apps:create app-name

#this will create an app on heroku and add a remote called "heroku" to your git

$ git push heroku master

$ heroku ps:scale web=1

# and now you're off!