Use stream for every Response

This pull request intend to resolve the following problem

Actually, when running a container, we can attach docker client to it for getting log. Problem is: if the container is too fast to execute no log will be output and attach request will gone in timeout :(

To change this problem client pass the stream for every response and read it by default, an optional parameter ($blocking) can be passed to the client when sending the request. If set to false this will not read the content of the response and delegate the reading to an upper level.

The attach call implement this non blocking stream and is executed before the start of the container, so we will get all the log and avoid the timeout problem.

I also add a attachedResponse to the container and attach it by default when calling run in container manager, so we can get our response from our container to read the log in "realtime"

Sample 

```php
$containerManager->run($container);
$container->getAttachedResponse()->readAttach(function ($type, $content) {
    echo $content;
});
```