Barcode scanner holder

A wall mount hook for a handheld USB barcode scanner. Mounts to wall with one screw. Designed to be stronger than other designs due to the print direction; others rely on layer adhesion to keep the arms attached.

Updated to strengthen it even more where the arms connect to the back. Several sharp corners were made into 45 degree angles so it looks nicer and won't hurt as much if you bump into it. The new file is named `barcode-scanner-hook.stl`.