text: var express = require('express')
  var app = express()
  var port = process.env.PORT || 3000
  var multer = require('multer')
  var upload = multer({ dest: 'uploads/' })
  
  app.use(express.static('./'))
  
  app.post('/', upload.single('file'), function (req, res, next) {
    var result = {size: req.file.size}
    res.end(JSON.stringify(result))
  })
  
  app.listen(port)
  