Simplify and organize _config.yml variables

_posts/2011-03-10-sample-post.md

@@ -1,7 +1,7 @@
 ---
 layout: post
 title: Sample Post
-description: "Just about everything you'll need to style in the theme: headings, paragraphs, blockquotes, tables, code blocks, and more."
+excerpt: "Just about everything you'll need to style in the theme: headings, paragraphs, blockquotes, tables, code blocks, and more."
 modified: 2013-05-31
 tags: [intro, beginner, jekyll, tutorial]
 comments: true

_posts/2012-05-22-readability-post.md

@@ -1,7 +1,7 @@
 ---
 layout: post
 title: "Testing Readability with a Bunch of Text"
-description: "A ton of text to test readability."
+excerpt: "A ton of text to test readability."
 tags: [sample post, readability, test]
 comments: true
 ---

_posts/2013-05-22-sample-post-images.md

@@ -1,7 +1,7 @@
 ---
 layout: post
 title: "A Post with Images"
-description: "Examples and code for displaying images in posts."
+excerpt: "Examples and code for displaying images in posts."
 tags: [sample post, images, test]
 comments: true
 ---

_posts/2013-05-23-readability-feature-post.md

@@ -1,7 +1,7 @@
 ---
 layout: post
 title: "Post with Large Feature Image and Text"
-description: "Custom written post descriptions are the way to go... if you're not lazy."
+excerpt: "Custom written post descriptions are the way to go... if you're not lazy."
 tags: [sample post, readability, test]
 comments: true
 image:

_posts/2013-08-12-sample-link-post.md

@@ -1,7 +1,7 @@
 ---
 layout: post
 title: "Sample Link Post"
-description: "Example and code for using link posts."
+excerpt: "Example and code for using link posts."
 tags: [sample post, link post]
 link: http://mademistakes.com  
 share: true

_posts/2013-08-16-code-highlighting-post.md

@@ -1,7 +1,7 @@
 ---
 layout: post
 title: Syntax Highlighting Post
-description: "Demo post displaying the various ways of highlighting code in Markdown."
+excerpt: "Demo post displaying the various ways of highlighting code in Markdown."
 tags: [sample post, code, highlighting]
 comments: true
 ---

_posts/2014-07-31-author-override.md

@@ -0,0 +1,39 @@
+---
+layout: post
+title: "Author Override"
+author: billy_rick
+modified:
+excerpt: "A post to test author overrides using a data file."
+tags: []
+---
+
+For those of you who may have content written by multiple authors on your site you can assign different authors to each post if desired.
+
+Traditionally you would assign a global author for the entire site and those attributes would be used in all post bylines, social networking links in the footer, Twitter Cards, and Google Authorship. These `owner` variables defined in your `config.yml`
+
+Start by creating an `authors.yml` file in the `_data` folder and add your authors using the following format.
+
+{% highlight yaml %}
+# Authors
+
+billy_rick:
+  name: Billy Rick
+  web: http://thewhip.com
+  email: billy@rick.com
+  bio: "What do you want, jewels? I am a very extravagant man."
+  avatar: bio-photo.jpg
+  twitter: extravagantman
+
+cornelius_fiddlebone:
+  name: Cornelius Fiddlebone
+  email: cornelius@thewhip.com
+  bio: "I ordered what?"
+  avatar: bio-photo.jpg
+  twitter: rhymeswithsackit
+{% endhighlight %}
+
+To assign Billy Rick as an author for our post. We'd add the following YAML front matter to a post:
+
+{% highlight yaml %}
+author: billy_rick
+{% endhighlight %}