Adds Facebook OpenGraph Meta Tags to head for a better social sharing experience.
Added Options page at under Dashboard > Settings > OpenGraph/MicroData.
Added ability to add your own default thumbnail.
Two new Opengraph property added.
Fixed issues with quotes and doublequotes which were breaking the meta tag.
Added setting to have your own word length in description.
No more itemprop as it's no longer necessary for sharing.
Added to author pages.
Author's gravatar as the share image.