Be careful here people! Even if we should be (are) grateful for things like this, it is a bit scary when one of the files in the archive is a raw binary elf. If you submit things like that, provide the source code at least, so that users can either build themselves or review it. I don't like any unknown binary like that have su rights in the phone, who knows what it does except for the vibration part. I do understand it is under our own responsibility, just simply reminding people about this.