readme update

git-svn-id: https://plugins.svn.wordpress.org/wpsso/trunk@879486 b8457f37-d9ea-0310-8a92-e5e31aec5664
readme update

git-svn-id: https://plugins.svn.wordpress.org/wpsso/trunk@879490 b8457f37-d9ea-0310-8a92-e5e31aec5664
v2.4rc4

git-svn-id: https://plugins.svn.wordpress.org/wpsso/trunk@879495 b8457f37-d9ea-0310-8a92-e5e31aec5664
readme update

git-svn-id: https://plugins.svn.wordpress.org/wpsso/trunk@879496 b8457f37-d9ea-0310-8a92-e5e31aec5664