fix docs error

Author: SunLn

demo/js/multiple.js

@@ -5,7 +5,6 @@
 
 
 $(function() {
-    var Qiniu = new QiniuJsSDK();
     var uploader = Qiniu.uploader({
         runtimes: 'html5,flash,html4',
         browse_button: 'pickfiles',
@@ -60,8 +59,8 @@ $(function() {
         console.log('hello man,a file is uploaded');
     });
 
-    var Qiniu2 = new QiniuJsSDK();
-    var uploader2 = Qiniu2.uploader({
+    var Q2 = new QiniuJsSDK();
+    var uploader2 = Q2.uploader({
         runtimes: 'html5,flash,html4',
         browse_button: 'pickfiles2',
         container: 'container2',

demo/views/multiple.html

@@ -159,7 +159,8 @@ <h4 class="modal-title" id="myModalLabel">查看初始化代码</h4>
                 key : val,
                 ……
             }
-            var Qiniu2 = new QiniuJsSDK(option2)
+            var Q2 = new QiniuJsSDK();
+            var uploader2 = Q2.uploader(option2);
             </code></pre>
           </div>
           <div class="modal-footer">