readme.txt update

git-svn-id: https://plugins.svn.wordpress.org/contact-bank/trunk@806707 b8457f37-d9ea-0310-8a92-e5e31aec5664
description updated

git-svn-id: https://plugins.svn.wordpress.org/contact-bank/trunk@806709 b8457f37-d9ea-0310-8a92-e5e31aec5664