Edit readme.txt

git-svn-id: https://plugins.svn.wordpress.org/lm-login-logo/trunk@975090 b8457f37-d9ea-0310-8a92-e5e31aec5664
Edit readme.txt

git-svn-id: https://plugins.svn.wordpress.org/lm-login-logo/trunk@975092 b8457f37-d9ea-0310-8a92-e5e31aec5664