updating the readme.txt

git-svn-id: https://plugins.svn.wordpress.org/wpbatch-scroll-to-top/trunk@1001509 b8457f37-d9ea-0310-8a92-e5e31aec5664
updating 2nd time

git-svn-id: https://plugins.svn.wordpress.org/wpbatch-scroll-to-top/trunk@1001512 b8457f37-d9ea-0310-8a92-e5e31aec5664