This uses the exec proxy to wrap functionality from com.blackberry.push.

Documentation available here:
http://developer.blackberry.com/html5/documentation/v2_1/push_service.html

+ removed yunnix' whitespace changes for clarity

Adds Windows8 support

Clear Android notifications on resume (see [#161])

Various (manually) merged changes

Update android-support-v13.jar with the latest version

Reference dependencies in example

Added support for defaults.

Mark PushHandlerActivity as exported (avoids security exception)