1.3.1

git-svn-id: https://plugins.svn.wordpress.org/woocommerce-pdf-invoices-packing-slips/trunk@895940 b8457f37-d9ea-0310-8a92-e5e31aec5664
1.3.1 readme

git-svn-id: https://plugins.svn.wordpress.org/woocommerce-pdf-invoices-packing-slips/trunk@895943 b8457f37-d9ea-0310-8a92-e5e31aec5664