Some readme change.

git-svn-id: https://plugins.svn.wordpress.org/wp-login-recaptcha/trunk@1039376 b8457f37-d9ea-0310-8a92-e5e31aec5664
Some readme change.

git-svn-id: https://plugins.svn.wordpress.org/wp-login-recaptcha/trunk@1039377 b8457f37-d9ea-0310-8a92-e5e31aec5664