consider making websocket transport consistent to others

[dvv]

Needs to measure what's the fastest -- 10xsend('A'), or 1xsend('AAAAAAAAAA').
And what is more reliable, at least virtually, a priori.

That's how I monkey patch the client, so far:

eio.transports.websocket.prototype.onData = function (data) {
  data = eio.parser.decodePayload(data)
  for (var i = 0, l = data.length; i < l; i++) {
    this.onPacket(data[i])
  }
};
eio.transports.websocket.prototype.write = function (packets) {
  this.socket.send(eio.parser.encodePayload(packets));
};