Once you done all the required changes in finish local setup of the project and ready to production.
You need to install Heroku-cli. It's available for MAC, Linux and Windows machine. Please follow this link and install CLI for deployment.
$ heroku --version
You need to Login with your heroku credential
$ heroku login // It will ask your heroku Email / pass
Login to https://dashboard.heroku.com .
Create New app
Once app created go to the deploy Tab and you can see your app git info that required app to deploy.