Fixed Apache license not using canonical version.

Now identical to https://www.apache.org/licenses/LICENSE-2.0.txt

Change-Id: I6eab8bdee2472107dfc72265e204fdd16f3abc2e

LICENSE.txt

@@ -187,7 +187,7 @@
       same "printed page" as the copyright notice for easier
       identification within third-party archives.
 
-   Copyright 2014 Google Inc.
+   Copyright [yyyy] [name of copyright owner]
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.