Adding video

git-svn-id: https://plugins.svn.wordpress.org/listly/trunk@931554 b8457f37-d9ea-0310-8a92-e5e31aec5664
Tweaking copy on entry to give more of an explanation.

git-svn-id: https://plugins.svn.wordpress.org/listly/trunk@931556 b8457f37-d9ea-0310-8a92-e5e31aec5664