fix imports

Signed-off-by: Jaka Hudoklin <[email protected]>

Author: offlinehacker

lib/helpers.js

@@ -8,6 +8,7 @@ var helpers = exports = module.exports = {
 };
 var assert = require('assert');
 var request = require('supertest');
+var expect = require('chai').expect;
 
 _beforeEach.withApp = function(app) {
   if (app.models.User) {