add missing code to make the daemon work

server.js

@@ -3,8 +3,17 @@ var dat = require('.')()
module.exports = function (server, stream) {
  return {
    join: function (id, cb) {
      var archive = dat.drive.get(id, '.')
      dat.join(id)
      console.log('join', id)
      var stream = archive.createEntryStream()
      stream.resume()
      stream.on('data', function (data) {
        console.log('got item', data)
        archive.download(data, function (err) {
          if (err) throw err
          console.log('downloaded')
        })
      })
      cb()
    },
    leave: function (id, cb) {