Fixing copyrights.
diff --git a/examples/ruby/greeter_client.rb b/examples/ruby/greeter_client.rb
index cb4aa19..2a24316 100755
--- a/examples/ruby/greeter_client.rb
+++ b/examples/ruby/greeter_client.rb
@@ -1,6 +1,6 @@
 #!/usr/bin/env ruby
 
-# Copyright 2015, Google Inc.
+# Copyright 2015-2016, Google Inc.
 # All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without