Initial commit of plugin

git-svn-id: https://plugins.svn.wordpress.org/drive-content/trunk@956745 b8457f37-d9ea-0310-8a92-e5e31aec5664
Updated version to match stable version

git-svn-id: https://plugins.svn.wordpress.org/drive-content/trunk@956746 b8457f37-d9ea-0310-8a92-e5e31aec5664