readme.txt changes and bug fix

git-svn-id: https://plugins.svn.wordpress.org/recent-wp-user-visitors/trunk@1055466 b8457f37-d9ea-0310-8a92-e5e31aec5664
developer name

git-svn-id: https://plugins.svn.wordpress.org/recent-wp-user-visitors/trunk@1055474 b8457f37-d9ea-0310-8a92-e5e31aec5664