faveo/vendor/maatwebsite/excel/docs/getting-started/config.md

#Config

Laravel 4

Laravel Excel includes several config settings for import-, export-, view- and CSV-specific settings. Use the artisan publish command to publish the config file to your project.

php artisan config:publish maatwebsite/excel

The config files can now be found at app/config/packages/maatwebsite/excel

Laravel 5

To publish the config settings in Laravel 5 use:

php artisan vendor:publish

This will add an excel.php config file to your config folder.