Merge pull request #226 from OneSignal/rel_2.9.0

Release commit for 2.9.0 including in-app messaging for iOS

Author: mikechoch

OneSignalExample/Assets/OneSignal/Platforms/Android/onesignal-unity.aar

@@ -170,7 +170,7 @@ typedef NS_ENUM(NSUInteger, OSNotificationDisplayType) {
 /* Parses an APS push payload into a OSNotificationPayload object.
    Useful to call from your NotificationServiceExtension when the
       didReceiveNotificationRequest:withContentHandler: method fires. */
-+(instancetype)parseWithApns:(nonnull NSDictionary*)message;
++ (instancetype)parseWithApns:(nonnull NSDictionary*)message;
 
 @end
 

OneSignalExample/Assets/OneSignal/Platforms/iOS/OneSignal.h

@@ -1 +1 @@
-2.8.2
+2.9.0