This is an openscad project.
You're expected to have BOSL2 and OpenSCAD nightly.
After installing both - simply open multiboard_screw.scad in your OpenSCAD.
You should be greeted with: 
This is an openscad project.
You're expected to have BOSL2 and OpenSCAD nightly.
After installing both - simply open multiboard_screw.scad in your OpenSCAD.
You should be greeted with: