"Updated README to reflect submodules integration -working."

"Integrated Altium_Libraries as a submodule -test"

merged with repo cleaning

Added changes from design review w/ chead 05/23/2020. New Outjob. Minor silk cleanup.

Cleaned up repo and gen'd v3 PDF

teardrop temp gradient/critical performance traces and pads. TP naming consistent across sch-pcb link.

Cleaned up sync-conflicts

Minor schematic/layout modifications for standard 2oz spacing compatibility. Alternative 5V power option from A3931 (jumper). 5V_DD re-route.

Minor AGND - PGND isolation modification

Updated motor connector pinout labels. Power stage moved closer to driver IC to minimize gate-line inductance.