You can install this package through composer using:

composer require roelofjan-elsinga/flat-file-cms

Afterwards, you may want to publish the configuration file. The defaults are sensible, but if you want to adjust any of the file locations, permission, etc. you can do so.

php artisan vendor:publish --provider="FlatFileCms\\FlatFileCmsServiceProvider"

The service provider is automatically discovered, so you won’t need to include it in your config/app.php file.