Peon320 - Battery Compartment - Additional layer

Here is an additional layer to add to the awesome Peon230 by Tech2C.

I created a mount for a Chinese action cam see here [Chinese Action Cam Mount](https://www.thingiverse.com/thing:2791787) and needed some extra space for a large LIPO at the back.

Camera (they will all fit):
- eBay: https://goo.gl/jLNaX5
- Amazon: https://goo.gl/qAaF5d
- Gearbest: https://goo.gl/bW6j4R

My drone's exact specification:
- Power Distribution Board: http://amzn.to/2HaxRBc
- 30A ESC: http://amzn.to