add extension. fix stub

Author: taylorotwell

src/Illuminate/Foundation/Console/stubs/resource.stub

@@ -2,9 +2,9 @@
 
 namespace DummyNamespace;
 
-use Illuminate\Http\Resources\Json\Resource;
+use Illuminate\Http\Resources\Json\JsonResource;
 
-class DummyClass extends Resource
+class DummyClass extends JsonResource
 {
     /**
      * Transform the resource into an array.

src/Illuminate/Http/Resources/Json/Resource.php

@@ -0,0 +1,8 @@
+<?php
+
+namespace Illuminate\Http\Resources\Json;
+
+class Resource extends JsonResource
+{
+    //
+}