public static function getVersion()
    {
        $version = Yii::app()->cache->get('ciims_version');
        if ($version === false)
        {
            $version = file_get_contents(Yii::getPathOfAlias('application.config.VERSION'));
            Yii::app()->cache->set('ciims_version', $version);
        }

        return $version;
    }