This a default Crowdbotics app. It is setup with a minimal amount of code/markup to deploy a static site to Heroku.
app.json -> Describes the repository to Heroku.
composer.json -> Identifies the repository as a PHP app to Heroku.
index.php -> The PHP script we're using to display the page statically.
home.html -> The static page we're showing. Feel free to change this and redeploy!
README.md -> This file.
After you deploy the site, give it ~10 seconds to build and then go to the page to see your changes.