Sample Angular AJAX

It pulls data from the API. To run:
* `./manage.py runserver` to start Django on port 8000
* `cd` to `site`
* `./scripts/web-server.js 8001` to start the server for Angular on port 8001
* Go to `localhost:8001/app/exampleAPI.html` to see the page.
* Make sure the error condition works when the Django server is not running.