Mini RAMBo Mount for 20mm Profiles

Mini RAMBo mount for 20mm extruded profiles, remixed from rew1red's mount to add a little more strength to the mount and sit more centered on the extrusion. Has a slightly larger foot print as I've moved the mouthing points away from one another.

I am going to make another revision of this as one of the PCB supports is slightly smaller than the rest and I had to drill out the mounting bolts to work better for M4 screws.