.updated the readme file for 4.0 compatibility

git-svn-id: https://plugins.svn.wordpress.org/wp-video-lightbox/trunk@981057 b8457f37-d9ea-0310-8a92-e5e31aec5664
.updating the url to https in the plugin files

git-svn-id: https://plugins.svn.wordpress.org/wp-video-lightbox/trunk@981093 b8457f37-d9ea-0310-8a92-e5e31aec5664