AramZS/opengraph — pull request #1 by MitchellMcKenna (2013-02-18 06:36:36+00:00)
Title: Fallback to use image_src if ogp::image isn't set

- Some websites (eg. imgur.com) don't have OGP tags but they do
indicated an image associated with the page using image_src meta tag.
Facebook.com's oEmbed also falls back on this if OGP data isn't available ([stackoverflow](http://stackoverflow.com/a/7623986/120210)).