With our files added and committed locally, we now need to add a remote origin that our local repository can push to. We can execute the following command in a Terminal window, remembering to replace the origin URL with your own repo path:

git remote add origin https://github.com/chazchumley/Mastering-Drupal-8.git 

To find the correct origin URL, simply look at the URL within the browser after the remote repo was created.