update multiple upload demo

components/upload/demo/multiple.md

@@ -17,6 +17,11 @@ var props = {
     if (info.file.status !== 'uploading') {
       console.log(info.file, info.fileList);
     }
+    if (info.file.status === 'done') {
+      message.success(info.file.name + ' 上传成功。');
+    } else if (info.file.error) {
+      message.error(info.file.name + ' 上传失败。');
+    }
   }
 };