Configuration to run Zombie JS It does not work using zombie 1.4.1 as required by mink-zombie, will work when zombie 2 is released and mink-zombie requires it

gistfile1.txt

// config.php
$CFG->behat_config = array(
    'default' => array(
        'extensions' => array(
            'Behat\MinkExtension\Extension' => array(
                'zombie' => '', 
                'javascript_session' => 'zombie'
            )   
        )   
    )
);

// composer.json (master - 2.7dev)
{
    "repositories" : [
        {
            "type": "vcs",
            "url": "https://github.com/moodlehq/moodle-behat-extension"
        }
    ],
    "require-dev": {
        "phpunit/phpunit": "3.7.*",
        "phpunit/dbUnit": "1.2.*",
        "moodlehq/behat-extension": "1.27.*"
        "behat/mink-zombie-driver": "1.0.*"
    }
}