Added more to readme

git-svn-id: https://plugins.svn.wordpress.org/hotspots/trunk@746716 b8457f37-d9ea-0310-8a92-e5e31aec5664
Added more to readme

git-svn-id: https://plugins.svn.wordpress.org/hotspots/trunk@746717 b8457f37-d9ea-0310-8a92-e5e31aec5664