Merge pull request normanmaurer#7 from JaryZhen/ChineseVersion

修改了jquery源来自国内的，不用翻墙

chapter12/src/main/resources/index.html

@@ -16,7 +16,7 @@
             height: 15em;
         }
     </style>
-    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
+    <script src="https://cdn.bootcss.com/jquery/1.4.2/jquery.min.js"></script>
     <script type="text/javascript">
         function log(msg) {
             var log = $('#log')