update readme

git-svn-id: https://plugins.svn.wordpress.org/woocommerce-enforce-strong-password/trunk@1037853 b8457f37-d9ea-0310-8a92-e5e31aec5664
remove unwanted file


git-svn-id: https://plugins.svn.wordpress.org/woocommerce-enforce-strong-password/trunk@1037856 b8457f37-d9ea-0310-8a92-e5e31aec5664