updated readme file

git-svn-id: https://plugins.svn.wordpress.org/cr3ativ-sponsor/trunk@1000819 b8457f37-d9ea-0310-8a92-e5e31aec5664
updating readme file again

git-svn-id: https://plugins.svn.wordpress.org/cr3ativ-sponsor/trunk@1000822 b8457f37-d9ea-0310-8a92-e5e31aec5664