default.html in arco-0.4.0

- old
+ new

@@ -3,9 +3,10 @@
   <head>
     <meta charset="UTF-8">
     <link rel="stylesheet" href="/assets/css/main.css">
     <link rel="stylesheet" href="/assets/flexmasonry/flexmasonry.css">
     <script src="/assets/flexmasonry/flexmasonry.js"></script>
+    {% seo %}
   </head>
   <body>
     {% include sidebar.html %}
     {{ content }}
   </body>
\ No newline at end of file