The Graphics Creator would automatically add the Graphics to the display list by mistake. The default should be to remain hidden. Fix phaserjs#3637

Author: photonstorm

src/gameobjects/graphics/GraphicsCreator.js

@@ -16,16 +16,21 @@ var Graphics = require('./Graphics');
  * @method Phaser.GameObjects.GameObjectCreator#graphics
  * @since 3.0.0
  *
- * @param {object} [config] - [description]
+ * @param {object} config - The configuration object this Game Object will use to create itself.
+ * @param {boolean} [addToScene] - Add this Game Object to the Scene after creating it? If set this argument overrides the `add` property in the config object.
  *
  * @return {Phaser.GameObjects.Graphics} The Game Object that was created.
  */
-GameObjectCreator.register('graphics', function (config)
+GameObjectCreator.register('graphics', function (config, addToScene)
 {
-    var add = GetAdvancedValue(config, 'add', true);
+    if (addToScene !== undefined)
+    {
+        config.add = addToScene;
+    }
+
     var graphics = new Graphics(this.scene, config);
 
-    if (add)
+    if (config.add)
     {
         this.scene.sys.displayList.add(graphics);
     }