laser adaptor for sunhokey prusa i3

I've seen an [article at instructables](http://www.instructables.com/id/Convert-a-3D-PRINTER-to-LASER-ENGRAVER-Under-40/) for using a cheap chiniese laser on a 3d printer. the origital article replaced the nozzle, but I've wanted both options so I've designed an adaptor to hold the laser next to the printing nozzle. gcode is made by using inkscape+plugins. I've [created a software](https://bitbucket.org/roseman/laserrunner) for previewing the output