Adding authors to a Jekyll blog

2013-01-27-example-article.html

---
# Layout.
layout: post

# Author.
author: robert_rawlins
---

authors.yml

# Author details.
robert_rawlins:
  name: Robert Rawlins
  web: http://twitter.com/sirrawlins
robin_geall:
  name: Robin Geall
  web: http://twitter.com/robingeall

post.html

<!-- Look the author details up from the site config. -->
{% assign author = site.data.authors[page.author] %}

<!-- Output author details if some exist. -->
{% if author %}
    <span>
        <!-- Personal Info. -->
        Written by <a href="{{ author.web }}" target="_blank">{{ author.name }}</a>
    </span>
{% endif %}