Update copyright to 2015
diff --git a/src/ruby/spec/channel_spec.rb b/src/ruby/spec/channel_spec.rb
index 82c7915..8e51441 100644
--- a/src/ruby/spec/channel_spec.rb
+++ b/src/ruby/spec/channel_spec.rb
@@ -1,4 +1,4 @@
-# Copyright 2014, Google Inc.
+# Copyright 2015, Google Inc.
 # All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
@@ -178,4 +178,4 @@
       expect(&blk).to_not raise_error
     end
   end
-end
+end
\ No newline at end of file