This jekyll plugin generates category pages for all categories that posts used.
Download
https://github.com/xinpascal/jekyll-plugins
Usage
Place the files in the _plugins and _layouts directories into your jekyll directory.
This example shows how to list these category pages.
1 <ul>
2 {% for category in site.categories %}
3 <li><a href="/categories/{{ category | first }}">{{ category | first }}</a></li>
4 {% endfor %}
5 </ul>