Mechanical and Logo Updates

Updated Reclaimer Labs Logo as per issue #11. Also added thru-hole
connectors to layout as per issue #9. Mounting holes have been moved as
per issue #8. LED hole is replaced with slot as per issue #7, might need
to be tweaked to reduce rotation during assembly. Inter-board connector
silkscreen is updated to more easily show mating side vs non-mating side
as per issue #5. Initial commit of gerbers.