Update Readme

git-svn-id: https://plugins.svn.wordpress.org/gwolle-gb/trunk@1028102 b8457f37-d9ea-0310-8a92-e5e31aec5664
Cleanup msg.php

git-svn-id: https://plugins.svn.wordpress.org/gwolle-gb/trunk@1028110 b8457f37-d9ea-0310-8a92-e5e31aec5664