Add Contributors

git-svn-id: https://plugins.svn.wordpress.org/woocommerce-for-japan/trunk@1027667 b8457f37-d9ea-0310-8a92-e5e31aec5664
Add Contributors fixed

git-svn-id: https://plugins.svn.wordpress.org/woocommerce-for-japan/trunk@1027668 b8457f37-d9ea-0310-8a92-e5e31aec5664