* Created a plugin interface for Simian that loads files from the running assembly, separate .dlls, or separate .cs files

* Converted the current Simian packet callbacks to an extension
* Added README explaining Simian extension development
* Added an example of a Simian.*.cs plugin

git-svn-id: http://libopenmetaverse.googlecode.com/svn/trunk@2096 52acb1d6-8a22-11de-b505-999d5b087335

Programs/Simian/Simian.ViewerEffectPrinter.cs.example

@@ -0,0 +1,30 @@
+using System;
+using OpenMetaverse;
+using OpenMetaverse.Packets;
+
+namespace Simian
+{
+    public class ViewerEffectPrinter : ISimianExtension
+    {
+        Simian Server;
+
+        public ViewerEffectPrinter(Simian server)
+        {
+            Server = server;
+        }
+
+        public void Start()
+        {
+            Server.UDPServer.RegisterPacketCallback(PacketType.ViewerEffect, new UDPServer.PacketCallback(ViewerEffectHandler));
+        }
+
+        public void Stop()
+        {
+        }
+
+        void ViewerEffectHandler(Packet packet, Agent agent)
+        {
+            Logger.Log("Received a ViewerEffect!", Helpers.LogLevel.Info);
+        }
+    }
+}