Support serve-static from express

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Feature Request

Use Case

It would be super cool if we could just use the serve-static plugin from the express ecosystem instead of continuing to invest in maintaining a parallel (and broken) internal serveStatic plugin.

Why do you want this?

Example API

var restify = require('restify');
var serveStatic = require('serve-static');

var app = restify.createServer();
var serve = serveStatic('./static');

app.get('.*', function(req, res, next) {
    res.addListener('finish', next);
    serve(req, res, function (err) {
        res.removeListener('finish', next);
        next(err);
     });
});

app.listen(8080);

It also looks like we need to support the req.originalUrl pattern similar to express: https://github.com/expressjs/express/blob/c0136d8b48dd3526c58b2ad8666fb4b12b55116c/lib/router/index.js#L172

This should include code snippets and documentation for the proposed feature

Are you willing and able to implement this?

"Yes" or, if "no", what can current contributors do to help you create a PR?

Yup!