Correct license header

src/node/utils/ExportTxt.js

@@ -1,5 +1,9 @@
 /**
- * Copyright 2009 Google Inc.
+ * TXT export
+ */
+
+/*
+ * 2013 John McLear
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -14,7 +18,6 @@
  * limitations under the License.
  */
 
-
 var async = require("async");
 var Changeset = require("ep_etherpad-lite/static/js/Changeset");
 var padManager = require("../db/PadManager");