SmartiPi Touch back cabinet

A small back cabinet that secures to the back of the [SmartiPi Touch case](http://smarticase.com/collections/all/products/smartipi-touch?variant=11864926209) for the Official Raspberry Pi Display. This cabinet creates 12mm of clearance behind the case to mount electronics. Requires 4 m4 screws 8-12 mm in length to attached to VESA mounts points on back of the case..