readme file updated

git-svn-id: https://plugins.svn.wordpress.org/ultimate-auction/trunk@752444 b8457f37-d9ea-0310-8a92-e5e31aec5664
readme file updated

git-svn-id: https://plugins.svn.wordpress.org/ultimate-auction/trunk@752445 b8457f37-d9ea-0310-8a92-e5e31aec5664