Updated license copyright notice

Author: SgtSilvio

LICENSE

@@ -186,7 +186,7 @@
       same "printed page" as the copyright notice for easier
       identification within third-party archives.
 
-   Copyright 2018 dc-square and the HiveMQ MQTT Client Project
+   Copyright 2018-present HiveMQ and the HiveMQ Community
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.