added shortcode 

git-svn-id: https://plugins.svn.wordpress.org/divelogs-widget/trunk@879979 b8457f37-d9ea-0310-8a92-e5e31aec5664
added shortcode 

git-svn-id: https://plugins.svn.wordpress.org/divelogs-widget/trunk@879980 b8457f37-d9ea-0310-8a92-e5e31aec5664