Added the readyStateChange event to the blacklist

[lpinca]

The title says pretty much everything :)

[cayasso]

Thank you again @lpinca

[cayasso]

Working!!! 890463f

[cayasso]

Hey @3rd-Eden I think it would be a good idea to expose the list of reserved events besides the check method, something like bellow, this is helpful for example if you need to black list both client and server events on a single method:

Primus.prototype.reserved = function reserved(evt) {
  return (/^(incoming|outgoing)::/).test(evt)
  || evt in this.reservedEvents;
};

Primus.prototype.reservedEvents = {
  readyStateChange: 1,
  reconnecting: 1,
  reconnect: 1,
  offline: 1,
  timeout: 1,
  online: 1,
  error: 1,
  close: 1,
  open: 1,
  data: 1,
  end: 1
};

[lpinca]

I've created an issue (#16) for better discussion.
I didn't remember that there were also custom reserved events which were not part of the Primus events.
This way there will be two blacklist, but it is still good to maintain the list of Primus reserved events inside of Primus.