Update README.md

Update BSD-LICENSE.txt

Changing to BSD License, because Thingiverse did not have an MIT option.

Arduino mounting plate

Make the holes rounder by using the special variable. Thanks, @tbuser.

Obligatory ignore file

Fixed image link

Fixed markdown image link

Whoops, this should be a markdown file

A real README

Use the scale function instead of depending on DXF files for small radius circles.

Initial check-in of bitbeam source files