If you're used to pushing Rails apps to Heroku, deploying your first Node app could be a pretty frustrating experience.

It was for me.

Here's some tricks to help you deploy:

Add Node as an engine dependency in your package.json file:

"engines": {
"node": "4.1.1"
},

Delete your node modules and reinstall all your dependencies in your production environment. To do this, run `rm -rf node_modules` and `npm install --production`
Double-check everything worked. Run `heroku local web` and visit http://localhost:5000 to see your app as it will appear once deployed.
If everything looks good, deploy as usual.

$ git add .
$ git commit -m "Added a Procfile."
$ heroku login
Enter your Heroku credentials.
...
$ heroku create
Creating arcane-lowlands-8408... done, stack is cedar
http://arcane-lowlands-8408.herokuapp.com/ | git@heroku.com:arcane-lowlands-8408.git
Git remote heroku added
$ git push heroku master
...
-----> Node.js app detected
...
-----> Launching... done
 http://arcane-lowlands-8408.herokuapp.com deployed to Heroku

For more information on deploying Node apps to Heroku, read through Heroku's very helpful instructions.