This makes it more sensible to use conn.get_meta. otherwise you'd have to manually specify the kv-less default endpoint and pass 'kv/' to all kv items you'd want to interact with. See (https://github.com/vdloo/consul-kv/pull/20)
The transaction default endpoint is now `http://localhost:8500/v1/txn`. Note that there is no trailing slash for this endpoint.