These are the steps for Heroku deployment:

Use this for mac set up

1. brew install heroku/brew/heroku
2. Use the heroku login command to log in to the Heroku CLI .
3. To clone a local version of the sample application that you can then deploy to Heroku, execute the following commands in your local command shell or terminal:

git clone https://github.com/heroku/node-js-getting-started.git cd node-js-getting-started . You now have a functioning Git repository that contains a simple application as well as a package.json file, which is used by Node’s dependency manager.
4. Create an app on Heroku, which prepares Heroku to receive your source code.
Heroku generates a random name (in this case sharp-rain-871) for your app, or you can pass a parameter to specify your own app name.

Use : git push heroku master