categories.md

layout	permalink	title
page	/categories/	Categories

{% for category in site.categories %}

{% capture category_name %}{{ category | first }}{% endcapture %}

<h3>{{ category_name }}</h3>
<a name="{{ category_name | slugize }}"></a>
{% for post in site.categories[category_name] %}
<article>
  <h4><a href="{{ post.url }}">{{ post.title }}</a></h4>
</article>
{% endfor %}

{% endfor %}