Update pikture.h

pikture.h

@@ -1,10 +1,21 @@
 /*
-pikture.h
-Native PIKTURE format encoder and decoder library.
-Version: 101
-License: MIT
-Made by: Nexoniarz
-*/
+ * pikture.h
+ * Native PIKTURE format encoder and decoder library.
+ * Version: 101
+ * * Copyright 2026 Nexoniarz
+ *
+ * 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.
+ */
 
 #ifndef PIKTURE_H
 #define PIKTURE_H