If you have an existing project and you need to work on it from a different computer, you can add the Heroku remote with the following command:
heroku git:remote -a some_app_name
This assumes that you have the heroku CLI toolbelt installed.
If you have an existing project and you need to work on it from a different computer, you can add the Heroku remote with the following command:
heroku git:remote -a some_app_name
This assumes that you have the heroku CLI toolbelt installed.