Social meta tags for Octopress

Plugin to provide the necessary changes to enable rich objects for the given site. Currently aiming to cover the following:

This mostly means adding extra meta tags and other things.

Documentation

Add richobject.html to source/_includes/custom, and edit source/_includes/head.html to add this line just before the closing </head> tag:

{% include custom/richobject.html %}

To have correctly filled out fields, add these new properties to every new post you make (for description and cover image URL):

description:
cover:

Also, in _config.yaml fill out the description:, and add a cover: property.