- README-PCB: added imperial units for board thickness
- README-PCB: changed surface finish recommendation to prefer ENIG more
strongly
- README-PCB: removed instructions for Gerber file generation from
"interpretation of files section"
- README-PCB: mention common coordinate system origin
- Makefile (VERSION, DIR): added board version and parent directory name
- Makefile: added generation of Gerbers and other fab files
- Makefile (gen): this never worked, changed --plot to --plot=ps
- Makefile: added section titles
- README-PCB: PCB making instructions