Patch 1

I don't think it makes sense keeping the fields with an underscore in them if you want to return a more "javascripty" format.

Although i can't figure out if it makes sense to rename the fields at all since it could cause confusion when looking at the regular REST API documentation. It's already a bit confusing with the TWIML giving back field names with the first letter being uppercase.

Also i moved the creation of the processKeys function outside the request since it doesn't take advantage of any variables inside the request.. No reason to create it at each request.