Ghost Node Express 4

Today's adventure: 1] Find a decent node blog. 2] Get it configured on a Heroku's NodeJs engine. According to the Ghost docs, I just needed to do this.. ghost().then(function (ghostServer) { app.use(ghostServer.config.paths.subdir, ghostServer.rootApp); ghostServer.start(app); //'app' is the existing Express app }); But, this didn't seem glaringly obvious