Added AFNetworking
Added .xccheckout to ignore
Grabbing trips from the server

Subclassed the AFHTTPSessionManager to use a base URL and for future
setting changes. Setup Trip object mapping with JSONModel.
Added NetworkActivityIndicator
Fixed Trip mapping.

Instead of getting a Trip object, we get the trip key instead.
Displaying trips

Displayed trips received from server in collections view.
Misaligned cell
Fixed alignment and segue issues
Added CocoaPods to testing
Removed API
Fixed mapping
Merge pull request #2 from yuriydyrenko/get-trips-from-server

Get trips from server