Updating readme

git-svn-id: https://plugins.svn.wordpress.org/complete-central-backup/trunk@877567 b8457f37-d9ea-0310-8a92-e5e31aec5664
Updating readme

git-svn-id: https://plugins.svn.wordpress.org/complete-central-backup/trunk@877568 b8457f37-d9ea-0310-8a92-e5e31aec5664