Initial commit

git-svn-id: https://plugins.svn.wordpress.org/shortcodes-to-show-or-hide-content/trunk@1004464 b8457f37-d9ea-0310-8a92-e5e31aec5664
Updated readme to reference GitHub development.

git-svn-id: https://plugins.svn.wordpress.org/shortcodes-to-show-or-hide-content/trunk@1004465 b8457f37-d9ea-0310-8a92-e5e31aec5664