Update License

Changed year in license file

Author: jobinsjohn

LICENSE

@@ -186,7 +186,7 @@ Apache License
       same "printed page" as the copyright notice for easier
       identification within third-party archives.
 
-   Copyright 2016 Daniel Cohen Gindi & Philipp Jahoda
+   Copyright 2016-2019 Daniel Cohen Gindi & Philipp Jahoda
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.