non-coffee version of user blakematrix's method to remove leading 'www''s from urls in express

gistfile1.txt

app.get('/*', function(req, res, next) {
    if (req.headers.host.match(/^www\./) != null) {
      res.redirect("http://" + req.headers.host.slice(4) + req.url, 301);
    } else {
      next();
    }
});