Allow to push packages name/key to config repository.

Signed-off-by: crynobone <crynobone@gmail.com>

src/Providers/ServiceProvider.php

@@ -1,9 +1,28 @@
 <?php namespace Orchestra\Support\Providers;
 
+use Orchestra\Contracts\Config\PackageRepository;
 use Orchestra\Support\Providers\Traits\PackageProviderTrait;
 use Illuminate\Support\ServiceProvider as BaseServiceProvider;
 
 abstract class ServiceProvider extends BaseServiceProvider
 {
     use PackageProviderTrait;
+
+    /**
+     * Merge the given configuration with the existing configuration.
+     *
+     * @param  string  $path
+     * @param  string  $key
+     * @return void
+     */
+    protected function mergeConfigFrom($path, $key)
+    {
+        parent::mergeConfigFrom($path, $key);
+
+        $config = $this->app['config'];
+
+        if ($config instanceof PackageRepository) {
+            $config->file($key);
+        }
+    }
 }