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Merge branch 'development' into notifications
Merge branch 'development' of https://github.com/nokia-developer/capture-the-flag into notifications

Conflicts:
	src/com/nokia/example/capturetheflag/MainActivity.java
GCM/Nokia Notifications variation, first step
Added custom broadcast receiver for Nokia Notifications so that NokiaNotificiationsIntentService can be located in the notifications/nokia package instead of root.
Added Google Cloud Messaging support to example server push messaging. Uses player's platform information to send push messages either through Nokia Notifications or Google Cloud Messaging. Added node-gcm and lodash libraries to package.json.
Added missing copyright statements, some more class/method comments. Minor refactoring to to Notifications Manager implementations.