Norqltest

I realized that the rql-promise library no longer works with rethinkdb 1.13 and I couldn't figure out why it kept giving the error "First argument to `run` must be an open connection."

So I rewrote this library to not depend on it and simply use normal rethinkdb queries. It'd probably be better if you could fix rql-promise but I'm submitting this pull request just in case and for anyone else that wants to use connect-rethinkdb with v1.13.