cleanup and filter with category

Author: fliiiix

_layouts/tag_index.html

@@ -1,6 +1,7 @@
 ---
 layout: post
 title: What's Radio Pi?
+category: blog
 ---
 
 My project for this December was to build a radio with a Raspberry Pi. One of my key goals is to make it so simple 

_posts/2014-12-01-whats-radio-pi.md

@@ -7,6 +7,7 @@
 
 <div class="posts-list">
   {% for post in paginator.posts %}
+  {% if post.category == 'blog' %}
   <article class="post-preview">
     <a href="{{ post.url | prepend: site.baseurl }}">
 	  <h2 class="post-title">{{ post.title }}</h2>
@@ -53,6 +54,7 @@ <h3 class="post-subtitle">
     {% endif %}
 
    </article>
+  {% endif %}
   {% endfor %}
 </div>