Added middleware option.

Author: jan876

lib/uploadhandler.js

@@ -7,7 +7,7 @@ var EventEmitter = require('events').EventEmitter,
     _ = require('lodash'),
     async = require('async');
 
-module.exports = function (options) {
+module.exports = function (middleware, options) {
 
     var FileInfo = require('./fileinfo')(
         _.extend({