Tiny Breadboard Mount for USB Power Supply

Loosely inspired by the [Apple Cube USB Charger Bracket](http://www.thingiverse.com/thing:1290842), this is a mount for a 5V A1 USB power supply ([this one at Adafruit](https://www.adafruit.com/products/501) and a [tiny breadboard](https://www.adafruit.com/products/65). There is a small cubby between the breadboard mount and power supply to stuff a short USB cable into. It's perfect for a little IOT device with a [Particle Photon](https://www.adafruit.com/products/2721)!