Add table column className demo

components/table/demo/bordered.md

@@ -16,8 +16,9 @@ const columns = [{
     return <a href="javascript:;">{text}</a>;
   }
 }, {
-  title: '年龄',
+  title: '资产',
-  dataIndex: 'age'
+  className: 'column-money',
+  dataIndex: 'money'
 }, {
   title: '住址',
   dataIndex: 'address'
@@ -26,20 +27,26 @@ const columns = [{
 const data = [{
   key: '1',
   name: '胡彦斌',
-  age: 32,
+  money: '￥300,000.00',
   address: '西湖区湖底公园1号'
 }, {
   key: '2',
   name: '胡彦祖',
-  age: 42,
+  money: '￥1,256,000.00',
   address: '西湖区湖底公园1号'
 }, {
   key: '3',
   name: '李大嘴',
-  age: 32,
+  money: '￥120,000.00',
   address: '西湖区湖底公园1号'
 }];
 
 ReactDOM.render(<Table columns={columns} dataSource={data} bordered={true} />
 , document.getElementById('components-table-demo-bordered'));
 ````
+
+````css
+.column-money {
+  text-align: right;
+}
+````

components/table/index.md

@@ -87,6 +87,7 @@ var dataSource = new Table.DataSource({
 | filterMultiple | 是否多选 | Boolean    |                                        | true    |
 | sorter     | 排序函数，本地模式下为一个函数，远程模式下为布尔值 | Function or Boolean |  | 无 |
 | width      | 列宽度 | String or Number |                                        | 无      |
+| className  | 列的 className             | String          |                     | 无      |
 
 ### dataSource
 

style/components/table.less

@@ -24,7 +24,6 @@
     background: @table-head-background-color;
     font-weight: bold;
     transition: background .3s ease;
-    text-align: left;
 
     .anticon-bars {
       margin-left: 4px;