1.5 update

git-svn-id: https://plugins.svn.wordpress.org/pricingtable/trunk@973691 b8457f37-d9ea-0310-8a92-e5e31aec5664
readme.txt update

git-svn-id: https://plugins.svn.wordpress.org/pricingtable/trunk@973692 b8457f37-d9ea-0310-8a92-e5e31aec5664