update to version 1.0.3

git-svn-id: https://plugins.svn.wordpress.org/woocommerce-gift-wrapper/trunk@1036904 b8457f37-d9ea-0310-8a92-e5e31aec5664
update readme with correct stable tag

git-svn-id: https://plugins.svn.wordpress.org/woocommerce-gift-wrapper/trunk@1036907 b8457f37-d9ea-0310-8a92-e5e31aec5664