Allow passing reader class and arguments as array

[tooblue]

Laravel does not support closures within the config files (laravel/framework#9625), and so setting the geocoder.reader configuration to an instance of \GeoIp2\Database\Reader or \GeoIp2\WebService\Client created problems when running php artisan config:cache.

With the changes I made, you could configure the reader like so:

    'reader' => [
        'class' => WebService::class,
        'arguments' => [env('MAXMIND_USER_ID'), env('MAXMIND_LICENSE_KEY')],
    ],

It also still supports the old method of setting the reader instance:

    'reader' => new WebService(
        env('MAXMIND_USER_ID'),
        env('MAXMIND_LICENSE_KEY')
    ),

[coveralls]

Coverage decreased (-1.2%) to 89.764% when pulling dde4def on tooblue:patch-1 into 67f027b on geocoder-php:master.

[coveralls]

Coverage decreased (-1.2%) to 89.764% when pulling dde4def on tooblue:patch-1 into 67f027b on geocoder-php:master.

[mikebronner]

@tooblue Good PR! Thanks :) I'll take a look at this over the next day or so. :)

[mikebronner]

@tooblue Could you give release 4.2.4 a try and let me know if it works for you?

[tooblue]

@mikebronner That works! Thanks very much. :)

[mikebronner]

Awesome! :) I changed the syntax around a bit to better match the other array-notations. Thanks for your work on this! :)