Prusa i3 MK3 90° Heatbed Cable Cover Remix

Remixed the 90° cable cover from i3d88 to work on newer i3 MK3 printers that have screw-on terminals rather than soldered ones. Everything kept the same from his design (including the center screw hole, though at this point it isn't needed). Doesn't need any extra hardware that doesn't already come with the printer. The only tweaking that really needs to be done is to slightly bend the round wire ends so that they don't stick out as much, but also clear the bottom of the frame. Picture of my pri