readme modify 

git-svn-id: https://plugins.svn.wordpress.org/news-box/trunk@971792 b8457f37-d9ea-0310-8a92-e5e31aec5664
readme modify 

git-svn-id: https://plugins.svn.wordpress.org/news-box/trunk@971793 b8457f37-d9ea-0310-8a92-e5e31aec5664