readme file changes

git-svn-id: https://plugins.svn.wordpress.org/recent-wp-user-visitors/trunk@992112 b8457f37-d9ea-0310-8a92-e5e31aec5664
read me changes

git-svn-id: https://plugins.svn.wordpress.org/recent-wp-user-visitors/trunk@992115 b8457f37-d9ea-0310-8a92-e5e31aec5664