按需加载 Table 依赖问题

[NewFuture]

ElementUI version

1.1.1 (之前版本正常)

Vue version

2.1.8

Steps to reproduce

import Vue from 'vue';
import {Table,TableColumn} from 'element-ui';

Vue.use(Table);
Vue.use(TableColumn);

浏览器显示出错信息

vue.runtime.common.js?d43f:521 [Vue warn]: 
Unknown custom element: <el-scrollbar> - did you register the component correctly? For recursive components, make sure to provide the "name" option. 
(found in component <el-table>)

需要引入Scrollbar才行

[QingWei-Li]

fixed via #2096