We don't need call info method every time we want redis resource. +1

[Moln]

Fix #100

The $resource['version'] can be set only once.

            if (!$resource['initialized']) {
                $this->connect($resource);
            }

            if (!$resource['version']) { //If version is not set .
                $info = $resource['resource']->info();
                $resource['version'] = $info['redis_version'];
            }

            return $resource['resource'];