npm install socket.io express
http://cire.pixnet.net/blog/post/36700142-%5Bnode.js%5D-socket.io-%E8%B7%A8%E5%B9%B3%E5%8F%B0%E5%8D%B3%E6%99%82%E6%BA%9D%E9%80%9A%E7%9A%84%E5%A5%BD%E5%A5%97%E4%BB%B6
https://npmjs.org/package/express
http://socket.io/
1. 將 serverApp1.js , startJSApp.bat and index.html copy c:\Program Files (x86)\nodejs\
2. 將 index.html Open之後,將“172.16.80.21” 換成自己的IP
3. 安裝socket.io,進入dos command mode,目錄轉換到 c:\Program Files (x86)\nodejs\,輸入 npm install socket.io
4. 安裝express,進入dos command mode,目錄轉換到 c:\Program Files (x86)\nodejs\,輸入 npm install express
5. 執行startJSApp.bat