Pi Zero Cable Holder

I had to solder wires directly to my Raspberry Pi Zero W and was worried that the wires may get pulled and damage the board. This project is an accessory for [this case](https://c4labs.net/products/zebra-zero-for-raspberry-pi-zero-black-ice-1) for my Pi. It's a simple print and it's attached with some standoffs I had laying around (because they were the right thread). It's loosely based on [this project](http://www.instructables.com/id/Arduino-Strain-Relief-Enclosure/).