set git remote heroku to https://git.heroku.com/promusicv20.git code example

Example 1: push heroku

$ git push heroku master

Example 2: heroku and github on termi

$ git push heroku master
Initializing repository, done.
updating 'refs/heads/master'
...

Example 3: heroku and github on termi

$ git remote rename heroku heroku-staging