Add an example to add additional service

[tfirdaus]

Provide an example on how to install new service in the DI Container. It's kind of the way like the Laravel and Symfony provider works where user can drop in reference to the class in an array and developers can use functions, methods, or pull the service from the container on their plugin.

<?php

return [
	\PluginName\Vendor\Codex\Providers\SettingsProvider::class,
	\PluginName\Vendor\Codex\Providers\AssetsServiceProvider::class,
	\PluginName\Vendor\Codex\Providers\AkismetServiceProvider::class,
];

Reference

• Laravel Service Provider