cleanup, udpate trunk

git-svn-id: https://plugins.svn.wordpress.org/whereabouts/trunk@1016256 b8457f37-d9ea-0310-8a92-e5e31aec5664
better readme

git-svn-id: https://plugins.svn.wordpress.org/whereabouts/trunk@1016257 b8457f37-d9ea-0310-8a92-e5e31aec5664