Filament drive bracket (Customizer)

This filament driver bracket designed to hold one or two extruders on threated rods frame. It can be mounted without frame disassembly (you only need to loose and then tight two nuts).

Provided STL designed to mount [RepRapPro extruder drive. NEMA14.](http://www.thingiverse.com/thing:1080732) on RepRapPro Huxley frame:
* extruder-mount.stl -- to mount one extruder
* extruder-mount_dual.stl -- print two for mounting two extruders

You can use Customizer or edit OpenSCAD source to make yo