tagging version 2.4

git-svn-id: https://plugins.svn.wordpress.org/huzzaz-video-gallery/trunk@856208 b8457f37-d9ea-0310-8a92-e5e31aec5664
updated readme

git-svn-id: https://plugins.svn.wordpress.org/huzzaz-video-gallery/trunk@856268 b8457f37-d9ea-0310-8a92-e5e31aec5664