update php

git-svn-id: https://plugins.svn.wordpress.org/wp-responsive-video-gallery-with-lightbox/trunk@1019976 b8457f37-d9ea-0310-8a92-e5e31aec5664
read me chaanges

git-svn-id: https://plugins.svn.wordpress.org/wp-responsive-video-gallery-with-lightbox/trunk@1019977 b8457f37-d9ea-0310-8a92-e5e31aec5664