title: Send error message on redirect
body: <p>I have a login form <code>/login</code> that posts the login info to <code>/checklogin</code>. If the credentials are incorrect, I want to redirect the user to <code>/login</code> with an error message along the lines of "incorrect username or password". However, I can't seem to figure out how to pass an option through <code>res.redirect</code> like you would using <code>res.render</code>. </p>
  
  <p>What's the best way of doing this? I saw a prior question asked about this, but it doesn't seem to work in the later versions of Express.</p>