Fix bug where onPlayerError method was not called

Classes/YTPlayerView.m

@@ -700,7 +700,7 @@ - (BOOL)loadWithPlayerParams:(NSDictionary *)additionalPlayerParams {
         @"onReady" : @"onReady",
         @"onStateChange" : @"onStateChange",
         @"onPlaybackQualityChange" : @"onPlaybackQualityChange",
-        @"onError" : @"onPlayerError"
+        @"onError" : @"onError"
   };
   NSMutableDictionary *playerParams = [[NSMutableDictionary alloc] init];
   if (additionalPlayerParams) {

youtube-ios-player-helper/Assets.bundle/Assets/YTPlayerView-iframe-player.html

@@ -76,7 +76,7 @@
         window.location.href = 'ytplayer://onPlaybackQualityChange?data=' + event.data;
     }
 
-    function onPlayerError(event) {
+    function onError(event) {
         if (event.data == 100) {
             error = true;
         }