Version 0.5.0

git-svn-id: https://plugins.svn.wordpress.org/playbuzz/trunk@1039786 b8457f37-d9ea-0310-8a92-e5e31aec5664
missing oembed.php

git-svn-id: https://plugins.svn.wordpress.org/playbuzz/trunk@1039804 b8457f37-d9ea-0310-8a92-e5e31aec5664