copy:
-
rungames.py to /usr/share/pyshared
-
demomode.sh to /home/pi/RetroPie/retropiemenu
-
demomode.png to /home/pi/RetroPie/retropiemenu/icons
-
and copy the content of the gamelist.xml to the existing gamelist.xml in /home/pi/RetroPie/retropiemenu