Added shortcode support.

git-svn-id: https://plugins.svn.wordpress.org/statsfc-table/trunk@920787 b8457f37-d9ea-0310-8a92-e5e31aec5664
Installation docs 

git-svn-id: https://plugins.svn.wordpress.org/statsfc-table/trunk@920788 b8457f37-d9ea-0310-8a92-e5e31aec5664