Allowed uppercase field set in the shortcode option.

git-svn-id: https://plugins.svn.wordpress.org/user-social-fields/trunk@992003 b8457f37-d9ea-0310-8a92-e5e31aec5664
Updated change log.

git-svn-id: https://plugins.svn.wordpress.org/user-social-fields/trunk@992006 b8457f37-d9ea-0310-8a92-e5e31aec5664