Allow for multiple notifications in Android
This allows for multiple notifications to be displayed on Android.  Simply add data with key "notId" and an integer value when sending via GCM.  Differentiate between different notifications by setting different notIds.  Defaults to 0 if not key supplied.
https://github.com/phonegap-build/PushPlugin/pull/142 (manual patch because fork is gone)
https://github.com/phonegap-build/PushPlugin/pull/149 (manually)
Mark PushHandlerActivity as exported (avoids security exception on
Intent dispatch)
Don't commit .project files
Added support for defaults.
Reference dependencies in example
[#245] partially
Update android-support-v13.jar with the latest version