I just got [this touchscreen](http://www.ebay.com/itm/3-5-TFT-Touch-Screen-LCD-Display-for-Raspberry-Pi-B-W-Heatsinks-Case-SD-Card-/131454478595?pt=LH_DefaultDomain_0&hash=item1e9b4c2903) that you attach to the gpio. It comes with a special image for the Rpi 2 under a red link called "Materials for the latest raspberry pi 2". In that zip is an \*.img file. Now my question is how do I set this screen up assuming I can ssh into the pi or use an hdmi screen. Does this replace the operating system?