bugfix on .destroy

examples/routers/message.vue

@@ -3,6 +3,7 @@
         <i-button @click.native="success">显示成功提示</i-button>
         <i-button @click.native="warning">显示警告提示</i-button>
         <i-button @click.native="error">显示错误提示</i-button>
+        <i-button @click.native="destroy">销毁提示</i-button>
     </div>
 </template>
 <script>
@@ -16,6 +17,9 @@
             },
             error () {
                 this.$Message.error('对方不想说话，并且向你抛出了一个异常');
+            },
+            destroy () {
+                this.$Message.destroy();
             }
         }
     }

src/components/base/notification/index.js

@@ -29,7 +29,7 @@ Notification.newInstance = properties => {
         },
         component: notification,
         destroy () {
-            document.body.removeChild(div);
+            document.body.removeChild(document.getElementsByClassName('ivu-message')[0].parentElement);
         }
     };
 };