Robo 3D bed mounted camera arm

I was using the camera mount from http://www.thingiverse.com/thing:1006864 which worked great. Until I added a dual fan modification. That mount centers the camera on the bed, so when you have a fan in front of the camera and print in the center of the bed, you get an excellent view or video of the fan.

In this re-mix (more of a reimplementation inspired by), I move the arm off to the far right side of the bed. I also change the top mounting plate to be a separate piece, so it can be poi