优化标签，增加模型标签的使用demo

public/template/default/front/index_index.html

@@ -30,6 +30,9 @@ html, body {background-color: #fff; color: #636b6f; font-family: 'Raleway', sans
 	{sent:nav tree="false" type="1" name="item"}
 	<li><a href="{$item['url']}">{$item['title']}</a></li>
 	{/sent:nav}
+	{sent:doc model="article" limit="10" cid="1"}
+	<li><a href="{:url('/article/detail-'.$item['id'])}">{$item['title']}</a></li>
+	{/sent:doc}
 	<div class="flex-center position-ref full-height">
 		<div class="content">
 			<div class="title m-b-md">