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