fixing missing product name

git-svn-id: https://plugins.svn.wordpress.org/photopress-paypal-shopping-cart/trunk@860685 b8457f37-d9ea-0310-8a92-e5e31aec5664
updating readme

git-svn-id: https://plugins.svn.wordpress.org/photopress-paypal-shopping-cart/trunk@860686 b8457f37-d9ea-0310-8a92-e5e31aec5664
fixing shipping amounts.

git-svn-id: https://plugins.svn.wordpress.org/photopress-paypal-shopping-cart/trunk@860694 b8457f37-d9ea-0310-8a92-e5e31aec5664