QX80 drone propeller guard

this is a remix from the [design by schmiernippel](http://www.thingiverse.com/thing:1823516).

It is a bit thicker and have some openings for clipping it easily on your QX80.(you don't need to remove the propellers). the original design didn't fit to my drone, but this one is holding tight.
It's easily printable and require like half an hour.

/!\ Please be aware that your motors are going to heat, so you may consider printing this with ABS or other high temperature filament. I used PLA, and the part was slightly deformed, so it didn't fit as well on the motors...