Update URLs and import paths to new GitHub home.
diff --git a/proto/encode.go b/proto/encode.go
index 6fd29b2..026f931 100644
--- a/proto/encode.go
+++ b/proto/encode.go
@@ -1,7 +1,7 @@
// Go support for Protocol Buffers - Google's data interchange format
//
// Copyright 2010 The Go Authors. All rights reserved.
-// http://code.google.com/p/goprotobuf/
+// https://github.com/golang/protobuf
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are