From minimal raspbian Jessie image
- resize partition and extend filesystem
- license
- gpu mem
- enable in /etc/defaults/kodi
- configure mount to media
- add kodi to groups
- apt-get install build-essential rpi-update git dkms
- rpi-update and reboot
- get kernel sources https://github.com/notro/rpi-source/wiki
- get driver from https://github.com/gnab/rtl8812au