readme update

git-svn-id: https://plugins.svn.wordpress.org/nextgen-facebook/trunk@879487 b8457f37-d9ea-0310-8a92-e5e31aec5664
readme update

git-svn-id: https://plugins.svn.wordpress.org/nextgen-facebook/trunk@879489 b8457f37-d9ea-0310-8a92-e5e31aec5664
v7.4rc4

git-svn-id: https://plugins.svn.wordpress.org/nextgen-facebook/trunk@879494 b8457f37-d9ea-0310-8a92-e5e31aec5664
readme update

git-svn-id: https://plugins.svn.wordpress.org/nextgen-facebook/trunk@879497 b8457f37-d9ea-0310-8a92-e5e31aec5664