Update copyright

Author: akarnokd

README.md

@@ -247,7 +247,7 @@ For bugs, questions and discussions please use the [Github Issues](https://githu
 
 ## LICENSE
 
-Copyright 2013-2016 Netflix, Inc.
+Copyright (c) 2016-present, RxJava Contributors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.