[csharp] Added AnimationState event documentation lines linking to API reference page and spine-unity docs page.

spine-csharp/src/AnimationState.cs

@@ -87,6 +87,10 @@ namespace Spine {
 		internal void OnEvent (TrackEntry entry, Event e) { if (Event != null) Event(entry, e); }
 
 		public delegate void TrackEntryDelegate (TrackEntry trackEntry);
+		/// <summary>See <see href="http://esotericsoftware.com/spine-api-reference#AnimationStateListener-Methods">
+		/// API Reference documentation pages here</see> for details. Usage in C# and spine-unity is explained
+		/// <see href="http://esotericsoftware.com/spine-unity#Processing-AnimationState-Events">here</see>
+		/// on the spine-unity documentation pages.</summary>
 		public event TrackEntryDelegate Start, Interrupt, End, Dispose, Complete;
 
 		public delegate void TrackEntryEventDelegate (TrackEntry trackEntry, Event e);
@@ -960,6 +964,10 @@ namespace Spine {
 
 		internal TrackEntry previous, next, mixingFrom, mixingTo;
 		// difference to libgdx reference: delegates are used for event callbacks instead of 'AnimationStateListener listener'.
+		/// <summary>See <see href="http://esotericsoftware.com/spine-api-reference#AnimationStateListener-Methods">
+		/// API Reference documentation pages here</see> for details. Usage in C# and spine-unity is explained
+		/// <see href="http://esotericsoftware.com/spine-unity#Processing-AnimationState-Events">here</see>
+		/// on the spine-unity documentation pages.</summary>
 		public event AnimationState.TrackEntryDelegate Start, Interrupt, End, Dispose, Complete;
 		public event AnimationState.TrackEntryEventDelegate Event;
 		internal void OnStart () { if (Start != null) Start(this); }