I set up a Rotorpixel Gimbal Hero 3 today (made specifically for the GoPro HERO3 camera), and it is totally awesome.  The GoPro Hero 3 camera just snaps into the camera mount, and the whole gimbal can be powered off of the auxiliary power lead on a DJI Phantom quadcopter. The isolation mount is flexible, so the gimbal can be used on pretty much any aerial frame, but it also has holes so you can just screw it into the stock GoPro mount holes on the bottom of the Phantom. I can’t wait until Keri has the store up and running—should be any time, now!