Another way to do this is to get a small length of clear tubing that will fit over your bleeder screws.
Run the line into a small bucket or container that you dont mind throwing away (oil drain pan works, and makes disposal more environmentally friendly, or you can use your imagination).
Take the resevoir cap off, open the bleeder screw on the RR, fill master cylinder as it empties. Once clear, tighten the bleeder and move around the vehicle in a clockwise motion.