protected function readPackageJson($path)
    {
        $file = new JsonFile($path);
        $json = $file->read();
        if (!isset($json['name'])) {
            $json['name'] = 'merge-plugin/' .
                strtr($path, DIRECTORY_SEPARATOR, '-');
        }
        if (!isset($json['version'])) {
            $json['version'] = '1.0.0';
        }
        return $json;
    }