XuGong - Arm - DJI ESC holder - 8" and 10 "

Getting rid of "the nut hurting the escs" problem

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07/01/2015
- Updated version of the 10" part

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13/12/2015
- Updated 8" version.
- Validate parts for the 8".
- There is a front and a back arm version.
- Back arms will also fit in front.

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03/12/2015
- I worked on the 8" version (still to be validated by an 8" friend/owner)
- I also have a new 10" version

Overall I simplified everything, printing with support isn't synonyme of 100% success.. so I g