PCIe Tester

I made this because I find it easier to compare PCIe pinouts to physical objects than using an image and eyeballing it.

PCIe headers are from [here](https://grabcad.com/library/pcie-solder-slots-x1-to-x16-1). I didn't make them, and I am very thankful that this user has made them available.

Connections are pretty snug, you may want to file them down a little bit. Probably gets better after a bit of use.