link heroku git to existing project code example
Example 1: how to add existing heroku remote
git remote add heroku [email protected]:project.git
Example 2: set git remote heroku to https://git.heroku.com/resume-projects.git
$ heroku git:remote -a thawing-inlet-61413
set git remote heroku to https://git.heroku.com/thawing-inlet-61413.git