added shortcode

git-svn-id: https://plugins.svn.wordpress.org/content-regions/branches/shortcode@841794 b8457f37-d9ea-0310-8a92-e5e31aec5664
allow numerical ids to be passed as argument

git-svn-id: https://plugins.svn.wordpress.org/content-regions/branches/shortcode@841799 b8457f37-d9ea-0310-8a92-e5e31aec5664
updated docs to v 0.4

git-svn-id: https://plugins.svn.wordpress.org/content-regions/branches/shortcode@841808 b8457f37-d9ea-0310-8a92-e5e31aec5664
merged shortcode branch

git-svn-id: https://plugins.svn.wordpress.org/content-regions/trunk@841812 b8457f37-d9ea-0310-8a92-e5e31aec5664