Build instructions do not include attaching X-Controller

[cfinke]

I checked and double-checked, but nowhere in the 1000mm X-Carve build instructions could I find instructions for attaching the X-Controller to the sideboard. I presumed that it fit over four of the threaded inserts, and I used some of the screws that were left over. It fit, but it made me feel like I had missed a step of instructions between wiring the X-Controller and starting to use the machine.