Support basic http server

[newtang]

Router tests are tested against a basic node http server.

function createServer(router) {
  return http.createServer(function onRequest(req, res) {
    router(req, res, finalhandler(req, res))
  })
}

It doesn't look like much work to support it. Here's a couple areas we fall short:

• In storage/utils.ts: buildOptionsHandler, handle res.send not being there. You can use res.end possibly
• In index.ts req.path isn't there. So, you have to pull the path out of the url. Here's what express does

[newtang]

I'm calling this done. We handle the buildOptionsHandler in the basic server, and use req.url if req.path isn't present. More url manipulation is necessary to support fqdn. We succeed in a great many router tests now, and have several of our own.