You can pull in the package via composer (Laravel 6+):
composer require devfactory/macros
You can pull in the package via composer (Laravel 5):
composer require devfactory/macros:^1.0
Then register the service provider and Facade by opening app/config/app.php
Devfactory\Macros\MacrosServiceProvider::class,
You must publish the config file:
php artisan vendor:publish --provider="Devfactory\Macros\MacrosServiceProvider"