Migrated WeatherMap to unified api

Updated the app to use MKMapView.AddAnnotations instead of
MKMapView.AddAnnotation
Migraded WayUp to unified api
Migrated ViewTransitions to unified api

Made once change to use NSString instead of String
Migrated UIImageEffects to unified api

Changed one reference to PointF to CGPoint
Migrated TransitionsDemo to unified api

Changed NSAction to Action, lots of float/nfloat conversions,
PopViewControllerAnimated to PopViewController