Added WebSocketServer

Example2/Program.cs

@@ -0,0 +1,36 @@
+using System;
+using System.Threading;
+using WebSocketSharp;
+
+namespace Example
+{
+  public class Program
+  {
+    public static void Main (string[] args)
+    {
+      //WebSocketServer wssv = new WebSocketServer("ws://localhost");
+      WebSocketServer wssv = new WebSocketServer("ws://localhost:4649");
+
+      wssv.OnConnection += (sender, e) =>
+      {
+        WebSocket ws = e.Socket;
+        ws.OnMessage += (sender_, e_) =>
+        {
+          // Echo
+          ws.Send(e_.Data);
+          // Chat
+          //wssv.Send(e_.Data);
+        };
+      };
+
+      wssv.Start();
+      Console.WriteLine(
+        "WebSocket Server ({0}) listening on address: {1} port: {2}\n", wssv.Url, wssv.Address, wssv.Port);
+
+      Console.WriteLine("Press any key to stop server...");
+      Console.ReadLine();
+
+      wssv.Stop();
+    }
+  }
+}