Push notifications, delegate methods, cleaning up delegate.
Deprecated is_modal?
Adding the ability to remove status bar

Also changed has_nav_bar? to nav_bar?
Added on_unload, PushNotification methods, tests
on_registration, not on_register
A commit just for @macfanatic .
Fix per @rheoli suggestion
Merge branch 'version-0.7' into feature/delegate_improvements
Fix per @rheoli
Merge branch 'version-0.7' into feature/delegate_improvements
Comment
Merge branch 'version-0.7' into feature/delegate_improvements
Merge pull request #91 from clearsightstudio/feature/delegate_improvements

PM::Delegate improvements, PushNotification object & methods