LICENSE file missing bsd-style license referenced from spdy/dictionary.go

[bbadour]

spdy/dictionary.go has a license header from the original Go Authors:

// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

but the LICENSE file has no text for the license.

[bbadour]

#105