Added destroy method for stream

[koenpunt]

Implemented missing method destroy on stream and added simple test for streaming API

[koenpunt]

Ok, but maybe initiating a Stream object is better than creating a custom destroy... Trying that right now

[impronunciable]

I thought about that. First I merged this to have things working and then need to implement the stream as a real stream...

[koenpunt]

I guess the custom Stream object isn't even necessary, because req is already an instance of Stream.

[impronunciable]

I don't want to return back to the user the whole request to handle. I like this approach with a custom stream object containing only the methods and data that is relevant to the user.

[koenpunt]

Ok fair enough, maybe initiating Stream like:

var stream = new Stream(req);

and setting the request in Stream as instance variable

function Stream(req){
    this.request = req;
}
Stream.prototype.destroy = function(){
    this.request.destroy();
}

so the original request is also available?

I've submitted a PR for this: #13

[impronunciable]

There is no need to do that. The only thing I want to implement is a function that destroy the stream, so I can start a new one for a possible reconnection.

Also if I'm starting using a stream from the Stream module I need to use another name to the 'error' event, that means I need to change the API of the module and I don't want that.

I think that adding the new destroy function it's good, at least for now.