revert another breaking change, should fix martinlindhe#45 and martinlindhe#48

Author: martinlindhe

src/GeneratorProvider.php

@@ -18,6 +18,10 @@ class GeneratorProvider extends ServiceProvider
      */
     public function boot()
     {
+        $this->app->singleton('vue-i18n.generate', function () {
+            return new Commands\GenerateInclude;
+        });
+
         $this->commands(
             'vue-i18n.generate'
         );
@@ -39,9 +43,6 @@ public function boot()
      */
     public function register()
     {
-        $this->app->singleton('vue-i18n.generate', function ($app) {
-            return new Generator($app['config']['vue-i18n-generator']);
-        });
     }
 
     /**