Update readme.txt

git-svn-id: https://plugins.svn.wordpress.org/author-box-after-posts/trunk@833190 b8457f37-d9ea-0310-8a92-e5e31aec5664
Upldate readme.txt

git-svn-id: https://plugins.svn.wordpress.org/author-box-after-posts/trunk@833191 b8457f37-d9ea-0310-8a92-e5e31aec5664