just use web group by default

app/Http/routes.php

@@ -11,10 +11,6 @@
 |
 */
 
-Route::group(['middleware' => ['web']], function () {
-
-    Route::get('/', function () {
-        return view('welcome');
-    });
-
+Route::get('/', function () {
+    return view('welcome');
 });

app/Providers/RouteServiceProvider.php

@@ -8,7 +8,7 @@ use Illuminate\Foundation\Support\Providers\RouteServiceProvider as ServiceProvi
 class RouteServiceProvider extends ServiceProvider
 {
     /**
-     * This namespace is applied to the controller routes in your routes file.
+     * This namespace is applied to your controller routes.
      *
      * In addition, it is set as the URL generator's root namespace.
      *
@@ -37,7 +37,22 @@ class RouteServiceProvider extends ServiceProvider
      */
     public function map(Router $router)
     {
-        $router->group(['namespace' => $this->namespace], function ($router) {
+        $this->mapWebRoutes($router);
+
+        //
+    }
+
+    /**
+     * Define the "web" routes for the application.
+     *
+     * @param  \Illuminate\Routing\Router  $router
+     * @return void
+     */
+    protected function mapWebRoutes(Router $router)
+    {
+        $router->group([
+            'namespace' => $this->namespace, 'middleware' => 'web'
+        ], function ($router) {
             require app_path('Http/routes.php');
         });
     }