fixed visual error with validation on the settings page

git-svn-id: https://plugins.svn.wordpress.org/bitmonet/trunk@774134 b8457f37-d9ea-0310-8a92-e5e31aec5664
updated readme file

git-svn-id: https://plugins.svn.wordpress.org/bitmonet/trunk@774136 b8457f37-d9ea-0310-8a92-e5e31aec5664