Prefab resources will now properly cleanup the scene objects they own

BansheeCore/Include/BsPrefab.h

@@ -15,6 +15,7 @@ namespace BansheeEngine
 	{
 	public:
 		Prefab();
+		~Prefab();
 
 		/**
 		 * @brief	Creates a new prefab from the provided scene object. If the scene object

BansheeCore/Source/BsPrefab.cpp

@@ -12,6 +12,12 @@ namespace BansheeEngine
 		
 	}
 
+	Prefab::~Prefab()
+	{
+		if (mRoot != nullptr)
+			mRoot->destroy(true);
+	}
+
 	HPrefab Prefab::create(const HSceneObject& sceneObject)
 	{
 		PrefabPtr newPrefab = createEmpty();