update breadcrumb

components/breadcrumb/demo/router.md

@@ -29,8 +29,14 @@ var App = React.createClass({
         <Link to="/">首页</Link>
         <Link to="/apps">应用列表</Link>
       </div>
-      <Breadcrumb Router={Router} />
       <RouteHandler />
+      <div style={{
+        marginBottom: 15,
+        marginTop: 15,
+        paddingBottom: 15,
+        borderBottom: '1px dashed #ccc'
+      }}>点击上面的导航切换页面，面包屑在下面：</div>
+      <Breadcrumb Router={Router} />
     </div>);
   }
 });