Download file with Node

node-download

// download: download the url to string
utl.download = function(url, cb){
  var options = require('url').parse(url),
  httpx = url.startsWith(url, 'https:') ? https : http,
  data = "",
  req = httpx.request(options, function(res){
    res.setEncoding("utf8")
    res.on("data", function(chunk){
      return data += chunk;
    })
    return res.on("end", function(){
      return cb(null, data, url);
    })
  })
  return req.end()
};