Make gyp.el conform to conventional library format

Makes it play better with Emacs ecosystem generally (e.g., builtin package.el support)

Change-Id: Ifb48baf85fcfdd71052e1a0098dc0b845417dc86
Reviewed-on: https://chromium-review.googlesource.com/c/external/gyp/+/5276479
Reviewed-by: Mark Mentovai <mark@chromium.org>
diff --git a/tools/emacs/gyp.el b/tools/emacs/gyp.el
index b98b155..bf2db70 100644
--- a/tools/emacs/gyp.el
+++ b/tools/emacs/gyp.el
@@ -1,9 +1,11 @@
-;;; gyp.el - font-lock-mode support for gyp files.
+;;; gyp.el --- font-lock-mode support for gyp files.
 
 ;; Copyright (c) 2012 Google Inc. All rights reserved.
 ;; Use of this source code is governed by a BSD-style license that can be
 ;; found in the LICENSE file.
 
+;; Version: 0.1.0
+
 ;; Put this somewhere in your load-path and
 ;; (require 'gyp)
 
@@ -273,3 +275,4 @@
     )))
 
 (provide 'gyp)
+;;; gyp.el ends here