Added in RIGoogleAnalyticsTracker:
	- Track screen;
	- Track Event;

RIAppDelegate:
	- Uncommented the code in order to get the plist file

RITracking:
	- Added comments in the header file;
	- Added the track screen method;

RITrackingTests:
	- Implemented the testTrackEvent
	- Commented a piece of code in testGoogleAnalyticsTrackerInitialization (pending solving)
Corrected the comments in RiTracking
Changed file name
Fixed name.
Cleaned code.
Fixed code indentation.

Changed the comments and added the RIEventTracking
Added comments according to AppleDocs requests.
Implemented the event tracking with GA
Correct code alignment
Fixed project settings
Fixed variable name
Fixed comments
Fixed queue comment
Merge pull request #1 from notabranca/master

Pull #1