button should inside children

components/upload/demo/basic.md

@@ -25,7 +25,9 @@ var props = {
 
 React.render(
   <Upload {...props}>
+    <button className="ant-btn ant-btn-ghost">
       <i className="anticon anticon-upload"></i> 点击上传
+    </button>
   </Upload>,
   document.getElementById('components-upload-demo-basic')
 );

components/upload/index.jsx

@@ -96,9 +96,7 @@ let AntUpload = React.createClass({
       return (
         <div className={prefixCls + ' ' + prefixCls + '-select'}>
           <Upload {...props}>
-            <button className='ant-btn ant-btn-ghost'>
             {this.props.children}
-            </button>
           </Upload>
           <UploadList items={this.state.downloadList} />
         </div>