Bumper for Avnet (ATT) LTE Shield

The Avnet LTE shield (part of the ATT IoT Starter Kit) is a useful device that can be used with many processors that don't have an Arduino-compatible pin configuration (Raspberry Pi, for example). But this LTE shield is designed to be seated into an Arduino-compatible socket, so when used otherwise the connection pins are exposed and vulnerable. This bumper (shield mount) securely holds the shield and protects the pins from accidental connections or shorts, and provides ample room for a variety