Updated for WooCommerce 2.1 (Beta 3)

git-svn-id: https://plugins.svn.wordpress.org/woocommerce-upload-my-file/trunk@837163 b8457f37-d9ea-0310-8a92-e5e31aec5664
Updated readme.txt

git-svn-id: https://plugins.svn.wordpress.org/woocommerce-upload-my-file/trunk@837165 b8457f37-d9ea-0310-8a92-e5e31aec5664