Updates IK FB to 2.0.  Improves integration and upgrade process with IK FB and IK Social Pro.  Adds ability to display number of likes, number of comments, and user avatars (requires a pro upgrade.)

git-svn-id: https://plugins.svn.wordpress.org/ik-facebook/trunk@761429 b8457f37-d9ea-0310-8a92-e5e31aec5664