CodePen + AngularJS + Firebase = A Complete Demo App in the Cloud
Can you build a complete web app in CodePen? You can with AngularJS + Firebase/AngularFire. I will leave this contacts app up and public for a few weeks so you can check it out.
This was a demo for my AngularJS weekend class. It is amazing how much you can build in so few lines of code. Rule the clouds!