private function getConfig()
    {
        $yaml = new Parser();

        $configFile = getenv('TRAVIS_BUILD_DIR') . '/.travis.yml';

        $config = $yaml->parse(file_get_contents($configFile));
        $config = $config['travisdeployer'];

        $this->branches = $config['branches'];
        if (count($this->branches) === 0) {
            die('No branches are configured to deploy to.' . PHP_EOL);
        }

        $this->verbose = filter_input(FILTER_VALIDATE_BOOLEAN, $config['verbose']);
    }