added travis build status, fixing syntax issues for node 4 and node 5 environments

Author: richardgirges

README.md

@@ -1,6 +1,8 @@
 # Description
 Simple express middleware for uploading files.
 
+[![Build Status](https://travis-ci.org/richardgirges/express-fileupload.svg?branch=master)](https://travis-ci.org/richardgirges/express-fileupload)
+
 # Version 0.1.0 Breaking Changes
 
 ## BREAKING CHANGE: No more urlencoded support

test/multipartFields.spec.js

@@ -1,10 +1,8 @@
 'use strict';
 
 const request = require('supertest');
-
-const {
-  app
-} = require('./server');
+const server = require('./server');
+const app = server.app;
 
 let mockUser = {
   firstName: 'Joe',

test/multipartUploads.spec.js

@@ -3,13 +3,11 @@
 const fs = require('fs');
 const path = require('path');
 const request = require('supertest');
-
-const {
-  clearUploadsDir,
-  fileDir,
-  uploadDir,
-  app
-} = require('./server');
+const server = require('./server');
+const app = server.app;
+const clearUploadsDir = server.clearUploadsDir;
+const fileDir = server.fileDir;
+const uploadDir = server.uploadDir;
 
 const mockFiles = [
   'car.png',