Changed readme.txt

git-svn-id: https://plugins.svn.wordpress.org/catconvert/trunk@836183 b8457f37-d9ea-0310-8a92-e5e31aec5664
Changed readme.txt

git-svn-id: https://plugins.svn.wordpress.org/catconvert/trunk@836186 b8457f37-d9ea-0310-8a92-e5e31aec5664