ADDED: will now check env vars 'ETCD_LISTEN_CLIENT_URLS' and 'ETCD_ADVERTISE_CLIENT_URLS' for a valid url should the client not define one.
ADDED: will now check env vars 'ETCD_LISTEN_CLIENT_URLS' and 'ETCD_ADVERTISE_CLIENT_URLS' for a valid url should the client not define one.

cdancy/etcd-rest