MPMU2 RPi Camera Mount

A mount for an RPi camera that is ideal for attaching to the front door of the Monoprice Maker Ultimate 2 (MPMU2). You will get a complete view of the printer volume... the camera can see everything from the build surface when it's printing the first layer to the entire build plate when it's all the way at the home position. This is a perfect way to set up a camera for [OctoPrint](https://octoprint.org/).

To attach:
* Stick camera on posts on back piece, taking care to have camera ribbon cable come out the right direction for your setup (but ideally toward the hing side to be less annoying).
* Put front on back by [carefully] applying pressure until the 4 holes friction-fit to the 4 posts.
* Stick 2 magnets into the holes in the printed front piece. If they do not friction-fit, you might need some glue to hold them into place.
* Hold the front door of printer open and bring camera up to the surface of the outside of front door.
* Place remaining two magnets on the inside of