Updated the cop in readme.txt

git-svn-id: https://plugins.svn.wordpress.org/wp-conversion-boxes/trunk@989365 b8457f37-d9ea-0310-8a92-e5e31aec5664
Updated the cop in readme.txt

git-svn-id: https://plugins.svn.wordpress.org/wp-conversion-boxes/trunk@989366 b8457f37-d9ea-0310-8a92-e5e31aec5664