Added Closure.js.  Put expressInterest in NDN.js.  Use it in ccnxProtocolService.js.
diff --git a/js/ccnxProtocol/modules/ndn-js-header.txt b/js/ccnxProtocol/modules/ndn-js-header.txt
index 63c037c..967f9e2 100644
--- a/js/ccnxProtocol/modules/ndn-js-header.txt
+++ b/js/ccnxProtocol/modules/ndn-js-header.txt
@@ -5,7 +5,7 @@
  * See COPYING for copyright and distribution information.
  */
 
-var EXPORTED_SYMBOLS = ["NDN", "DataUtils", "readAllFromSocket"];
+var EXPORTED_SYMBOLS = ["NDN", "Closure", "Name", "Interest", "ContentObject", "DataUtils"];
 
 Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
 Components.utils.import("resource://gre/modules/NetUtil.jsm");