Adding v1.0.0

git-svn-id: https://plugins.svn.wordpress.org/woocommerce-advanced-free-shipping/trunk@901856 b8457f37-d9ea-0310-8a92-e5e31aec5664
Update readme

git-svn-id: https://plugins.svn.wordpress.org/woocommerce-advanced-free-shipping/trunk@901860 b8457f37-d9ea-0310-8a92-e5e31aec5664
Update readme

git-svn-id: https://plugins.svn.wordpress.org/woocommerce-advanced-free-shipping/trunk@901861 b8457f37-d9ea-0310-8a92-e5e31aec5664
Update readme

git-svn-id: https://plugins.svn.wordpress.org/woocommerce-advanced-free-shipping/trunk@901862 b8457f37-d9ea-0310-8a92-e5e31aec5664