load initial position on first render

txt/src/carouselView/dev/Shared.iOS/CarouselViewRenderer.cs

@@ -222,6 +222,7 @@ protected override void OnElementChanged(ElementChangedEventArgs<CarouselView> e
 
 				// initialize properties
 				_position = Element.Position;
+				_controller.ReloadData(_position);
 
 				// hook up crud events
 				((ICarouselViewController)newElement).CollectionChanged += OnCollectionChanged;