Fixed license

Author: sorinsarca

tests/JsonSerializableClosure.php

@@ -1,19 +1,9 @@
 <?php
 /* ===========================================================================
- * Copyright 2019 Zindex Software
+ * Copyright (c) 2019-2020 Zindex Software
  *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *    http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- * ============================================================================ */
+ * Licensed under the MIT License
+ * =========================================================================== */
 
 namespace Opis\Closure\Test;