simple example of how to update Nodejitsu domains field without adding it to your package.json

gistfile1.txt

var http = require('http')
var nj = require('nodejitsu-api')

var client = nj.createClient({
  username: 'coderarity',
  password: '*****',
  remoteUri: 'https://api.nodejitsu.com'
})

var appname = 'dns-test'
var domains = []

var server = http.createServer(function (req, res) {
  if (req.url === '/') {
    res.writeHead(200, {'content-type': 'text/html'})
    res.end('Welcome to IT WORKS!')
  }
  else if (req.url === '/domain') {
    var buffer = ''
    req.on('data', function (chunk) {
      if (chunk !== undefined && chunk !== null)
        buffer += chunk.toString()
    })
    req.on('end', function () {
      domains.push(buffer)

      // send request to add domain from buffer
      client.apps.update(appname, {domains: domains}, function (err, result) {
        if (err) {
          res.writeHead(500)
          res.end('update failed: '+err.message)
        }
        res.writeHead(200)
        res.end('updated successfully! '+JSON.stringify(result))
      })
    })
  }
  else {
    res.writeHead(404)
    res.end('not found')
  }
})

server.listen(8080)