Customizable SD. MicroSD, USB Holder

**[UPDATE 2020-12-06]**: Someone requested a version of the CAD file that could be used with programs other than F360 so I have added a .step file.

**NOTE**: If you don't plan to customize this using Fusion 360 (or other tool), please use the STL named SD_Holder_Blank.stl. It has no placeholder text.

I really liked the clever design of the original, but I wanted to customize it a bit (more slots and a logo for example). I started by trying to work with the original STL, but in the end I ju