Example project improvements

[nzagorchev]

Background

1. Resolve warning:

CTNotificationContentExample[670:122149] You've implemented -[<UIApplicationDelegate> application:didReceiveRemoteNotification:fetchCompletionHandler:], but you still need to add "remote-notification" to the list of your supported UIBackgroundModes in your Info.plist.

2. Resolve code signing of resource bundles when using CocoaPods

Implementation

1. Add Background Modes: Remote notifications capability
2. Add post_install script to set codesigning to NO for resource bundles

Testing steps

Manual

Backward compatible

Yes