Can't find a library or manual for my rfid reader? Answered

So I recently got one of these http://www.sainsmart.com/sainsmart-serial-uart-13-56mhz-rfid-reader-writer-module-kits-for-arduino.html 

and it mentions I should download the manual for insturction on the commands, but I can't find the manual or any libraries for the life of me!

So i was wondering if the good people of instructables might be able to help me out on locating this manual/library so that i can pop it into my arduino projects :P