updated readme.txt

git-svn-id: https://plugins.svn.wordpress.org/wp-clean-up-optimizer/trunk@987184 b8457f37-d9ea-0310-8a92-e5e31aec5664
tags update

git-svn-id: https://plugins.svn.wordpress.org/wp-clean-up-optimizer/trunk@987188 b8457f37-d9ea-0310-8a92-e5e31aec5664
readme.txt updated

git-svn-id: https://plugins.svn.wordpress.org/wp-clean-up-optimizer/trunk@987190 b8457f37-d9ea-0310-8a92-e5e31aec5664