update readme and comments

Author: Liming Xie

Demo/SocketIOScript.cs

@@ -53,21 +53,18 @@ void DoOpen() {
 		if (socket == null) {
 			socket = IO.Socket (serverURL);
 			socket.On (Socket.EVENT_CONNECT, () => {
-				//Debug.Log ("Socket.IO connected");
 				lock(chatLog) {
+					// Access to Unity UI is not allowed in a background thread, so let's put into a shared variable
 					chatLog.Add("Socket.IO connected.");
 				}
 			});
 			socket.On ("chat", (data) => {
-				//Debug.Log(data);
-
 				string str = data.ToString();
-				//Debug.Log(str);
 
 				ChatData chat = JsonConvert.DeserializeObject<ChatData> (str);
 				string strChatLog = "user#" + chat.id + ": " + chat.msg;
-				//Debug.Log (strChatLog);
 
+				// Access to Unity UI is not allowed in a background thread, so let's put into a shared variable
 				lock(chatLog) {
 					chatLog.Add(strChatLog);
 				}

README.md

@@ -47,9 +47,9 @@ This library supports all of the features the JS client does, including events,
 Mono, .NET 2.0
 
 ## Demo
-* [Example code for Socket.IO](Demo/SocketIOScript.cs)
-
-Unzip the test-server.zip, it's a nodejs app for testing purpose.
+* [node.js example code, chat server](Demo/test-server/index.js)
+* [HTML example code, web-based chat client](Demo/test-server/index.html)
+* [Unity C# example code, chat client](Demo/SocketIOScript.cs)
 
 ## Comparison