Add sample post demoing background image

_posts/2013-10-26-background-image.md

@@ -0,0 +1,23 @@
+---
+layout: post
+title: Post with a Background Image
+description: "Sample post with a background image CSS override."
+tags: [sample post]
+image:
+  background: triangular.png
+comments: true
+share: true
+---
+
+Here be a sample post with a custom background image. To utilize this "feature" just add the following YAML to a post's front matter.
+
+{% highlight yaml %}
+image:
+  background: filename.png
+{% endhighlight %}
+
+This little bit of YAML makes the assumption that your background image asset is in the `/images` folder. If you place it somewhere else or are hotlinking from the web, just include the full http(s):// URL. Either way you should have a background image that is tiled.
+
+If you want to set a background image for the entire site just add `background: filename.png` to your `_config.yml` and BOOM --- background images on every page!
+
+<div xmlns:cc="http://creativecommons.org/ns#" xmlns:dct="http://purl.org/dc/terms/" about="http://subtlepatterns.com" class="notice">Background images from <span property="dct:title">Subtle Patterns</span> (<a rel="cc:attributionURL" property="cc:attributionName" href="http://subtlepatterns.com">Subtle Patterns</a>) / <a rel="license" href="http://creativecommons.org/licenses/by-sa/3.0/">CC BY-SA 3.0</a></div>