RigidBot Smoke Detector Bracket

##Introduction
A common safety precaution with 3D printers is to install a smoke detector near the printer itself. This bracket replaces the standard ceiling mount for a [First Alert SA303](http://www.amazon.com/gp/product/B000BD6BSG/ref=as_li_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B000BD6BSG&linkCode=as2&tag=techproio-20&linkId=7BKA2GDN55NV3NAU) smoke detector, allowing for the device to be mounted directly to the RigidBot frame.
##Update
Added version 2, which strengthens the support member between the frame and the smoke detector itself. V1 uses less filament and is sufficient if you wish to hang the smoke detector into the frame (as pictured). If you wish to hold the smoke detector above the RigidBot, use V2 for added strength/support.
##Update 9/23
Updated part files to correct scaling issue in the STL file.