- Created a Factory to handle another 2 requests (Stops and Departure).
- Created the 2 new Operation classes to Stop and Departure.
- TableView updates when new data is downloaded, and show a spinner while is downloading.
Merge branch 'testing' of https://github.com/CheesecakeLabs/ArcTouch-Challenge into testing

Conflicts:
	ArcTouch-Challenge/ArcTouch-Challenge/ViewController/ListTableViewController.h
	ArcTouch-Challenge/ArcTouch-Challenge/ViewController/ListTableViewController.m