code: def bootstrap(self):
          
          cmd = ["heroku", "apps:create", self.name, "--buildpack", "heroku/python"]
  
          # If a team is specified, assign the app to the team.
          if self.team:
              cmd.extend(["--team", self.team])
  
          self._run(cmd)
          # Set HOST value
          self.set_multiple(
              HOST=self.url, CREATOR=self.login_name(), DALLINGER_UID=self.dallinger_uid
          )
docs: Creates the heroku app and local git remote. Call this once you're
          in the local repo you're going to use.