TASK: Added ability to add multiple Google Analytics profiles at the Controller level
TODO: Modify TrackerTest and finish CollectionTest
Wrote a few tests for Collection Class
TODO: Run tests
Modified tests
MINOR: Updated the README file to reflect new multiple account functionality
setEnableTracking switched to Collection, not the Tracker
Added method to retrieve Tracker object by id or title
Updated readme
Now throws exception if the user provides an incorrect title or id
Merge pull request #1 from canvaspop/53151109/add_google_analytics_support

CR/NEED - Add Google Analytics support