old_contents: 'use strict'
  
  var Koa = require('koa');
  var wechat = require('./wechat/g');
  var util = require('./libs/util');
  var path = require('path');
  var config = require('./config')
  var weixin = require('./weixin')
  // var wechat_file = path.join(__dirname, './config/wexin.txt');
  
  // var config = {
  //     appID: 'wx4f4bfd59e2e2d8ab',
  //     appSecret: '9008d71b8297f48b673357852945fcbb',
  //     token: 'fe178weixin',
  //     getAccessToken: function (){
  //     	return util.readFileAsyns(wechat_file)
  //     },
  //     saveAccessToken: function (data){
  //     	data = JSON.stringify(data)
  //     	return util.writeFileAsync(wechat_file,data)
  //     }
  // }
  var app = new Koa();
  app.use(wechat(config, weixin.reply))
  app.listen(1234);
  console.log('end')
new_contents: 'use strict'
  
  var Koa = require('koa');
  var wechat = require('./wechat/g');
  var util = require('./libs/util');
  var path = require('path');
  var config = require('./config')
  var weixin = require('./weixin')
  
  var app = new Koa();
  app.use(wechat(config, weixin.reply))
  app.listen(1234);
  console.log('end')
subject: remove config info