added methods to track pushes
Merge branch 'master' into track-push
changed up data schema
removed redundant code and added better comments
removed token and commented methods
Merge branch 'master' into track-push

Conflicts:
	HelloMixpanel/Podfile.lock
removed applicationDidFinishLaunching
added sharedinstance convenience method
wrote some tests
camel case
removed trackLaunchOptions
renamed some methods
fixed message_type
removed launchOptions extra method
added test for malformed
oops
changed event names
clearer use of if/else in trackNotification
Merge remote-tracking branch 'origin/master' into track-push
added more tests for malformed push payloads