niallkennedy/twitter-cards — pull request #5 by bencomp (2013-03-10 16:17:09+00:00)
Title: Support photo card creation

Creates a photo Card when the post format is "image" and there is a thumbnail image, otherwise creates a default Card. Sets a title, even though for photo cards it isn't required.
Requires get_post_format(), available since WP 3.1