initial version of the 'content-available' aka 'silent push support
updated iOS lib fixing #AGCORDOVA-11
lib as dependency
keep all completion handlers instead of just the last
only invoke the js callback when the notification is tabbed
almost fixed it, last time
callback no longer gets called twice on notification 'click'
made android dependencies only for android
use title in notification if available
Merge branch 'AGCORDOVA-23'
Merge branch 'background'
Adding License file
care for iOS 8 registration when running under that platform
fix warning from the compiler
Merge branch 'AGCORDOVA-25'
Updated version for release of 0.7.0