Updated the readme 

git-svn-id: https://plugins.svn.wordpress.org/descriptive-menu-widget/trunk@777450 b8457f37-d9ea-0310-8a92-e5e31aec5664
Updated the readme, again!

git-svn-id: https://plugins.svn.wordpress.org/descriptive-menu-widget/trunk@777451 b8457f37-d9ea-0310-8a92-e5e31aec5664