Update transformer.stub (#200)

add `$availableIncludes` & `$defaultIncludes`

Author: ctf0

src/Console/stubs/transformer.stub

@@ -6,6 +6,24 @@ use League\Fractal\TransformerAbstract;
 
 class DummyClass extends TransformerAbstract
 {
+    /**
+     * List of resources to automatically include
+     *
+     * @var array
+     */
+    protected $defaultIncludes = [
+        //
+    ];
+    
+    /**
+     * List of resources possible to include
+     *
+     * @var array
+     */
+    protected $availableIncludes = [
+        //
+    ];
+    
     /**
      * A Fractal transformer.
      *