This is THE most helpful tutorial to exist. Thank you!

I do have one question though:
After requesting the refresh token with the code, my url only redirects with the same code. This is difficult to explain, but I am able to return all data except the refresh token. (CAN get username and access token)

This is my code:

router.get('/', function(req, res, next) {
    let code = req.query.code;
    if (code) {
        return rp({
            method: "POST",
            uri: "https://steemconnect.com/api/oauth2/token",
            body: {
                response_type: "refresh",
                code: code,
                client_id: "appname",
                client_secret: process.env.SC_CLIENT_SECRET,
                scope: "vote"
            },
            json: true
        }).then((results) => {
            //let qs = "access_token=" + results.access_token + "&refresh_token=" + results.refresh_token + "&username=" + results.username;
            res.render('customize', { title: "appname", username: results.refresh_token, refresh_token: results.refresh_token });
              // results.refresh_token returns undefined?
        });
     }
});

Any help would be much appreciated. Thanks!