title: How to link a folder with an existing Heroku app
body: <p>I have an existing Rails app on GitHub and deployed on Heroku. I'm trying to set up a new development machine and have cloned the project from my GitHub repository. However, I'm confused as to how to link this folder up to Heroku. Originally, I used the <code>heroku create</code> command, but obviously I don't want to do that this time since it will create another Heroku instance.</p>