Trinus Extruder Cooling Fan Shroud

**** 8/16/2017 - Updated design at https://www.thingiverse.com/thing:2482344*****

I was having a problem with filament softening in the extruder housing and bending, creating jams. Kodama chose to piggyback the parts cooling fan onto the extruder cooling fan, which resulted in insufficient air flow through the extruder. This shroud positions a fan to draw air through the extruder housing and out the side exhaust. Its still a work in progress, as the shroud requires a piece of velcro on t