fix license inconsistencies

LICENSE.md

@@ -1,3 +1,2 @@
-Copyright (c) 2010 Robert Kieffer
-
-Dual licensed under the [MIT](http://en.wikipedia.org/wiki/MIT_License) and [GPL](http://en.wikipedia.org/wiki/GNU_General_Public_License) licenses.
+Copyright (c) 2010-2012 Robert Kieffer
+MIT License - http://opensource.org/licenses/mit-license.php

uuid.js

@@ -1,8 +1,8 @@
 //     uuid.js
 //
-//     (c) 2010-2012 Robert Kieffer
-//     MIT License
-//     https://github.com/broofa/node-uuid
+//     Copyright (c) 2010-2012 Robert Kieffer
+//     MIT License - http://opensource.org/licenses/mit-license.php
+
 (function() {
   var _global = this;