Add logic for printing site update above categories.

index.html

@@ -2,6 +2,16 @@
 layout: default
 ---
 <div class="home">
+  {% assign last_meta = site.categories.meta.first %}
+  {% if last_meta.active %}
+    <div class="site-update">
+      Site Update:
+      <a href="{{ last_meta.href | prepend: site.baseurl }}">
+        {{ last_meta.title }}
+      </a>
+    </div>
+  {% endif %}
+    
   {% for category in site.categories %}
     {% if category.first == "meta" %} {% continue %} {% endif %}
     <div class="column col-{{site.categories.size | minus: 1}}">
@@ -11,8 +21,4 @@ layout: default
       {% include category_list.html category=category.first limit=5 %}
     </div>
   {% endfor %}
-
-  <div class="site-updates">
-    
-  </div>
 </div>