Trying to figure out how to install Colemak on Raspberry Pi using Raspian image

So far I have this. Some bits may be not be needed, thats why I am here. Definitely a noob at Raspberry Pi, and linux in general

Boot and get on Internet
Open LX Terminal
download Colemak from Colemak site
      wget https://colemak.com/pub/unix/colemak-1.0.tar.gz

Decompress and then unTar
      gzip -d colemak-1.0.tar.gz
      tar -xf colemak-1.0.tar

You should now have:
pi@raspberrypi ~ $ ls
colemak-1.0  colemak-1.0.tar  Desktop  python_games

Copy file
      sudo cp colemak-1.0/xorg/colemak /usr/share/X11/xkb/symbols/colemak

Change layout to Colemak
      setxkbmap -v colemak

Unfortunately this does not survive reboots. Please help