update info

git-svn-id: https://plugins.svn.wordpress.org/woocommerce-currency-switcher/trunk@1049605 b8457f37-d9ea-0310-8a92-e5e31aec5664
updated readme

git-svn-id: https://plugins.svn.wordpress.org/woocommerce-currency-switcher/trunk@1049607 b8457f37-d9ea-0310-8a92-e5e31aec5664