Room visualization used at 30c3.

This is almost the code that ran at 30c3. I had to remove the font used 
as the font used at 30c3 cannot be redistributed. The replacement font
is "Roboto light". See http://www.fontsquirrel.com/license/roboto

Installation auf dem Raspberrypi:
    
    sudo easy_install-pypy pytz 
    sudo unzip /usr/lib/pypy-upstream/site-packages/pytz-2015.4-py2.7.egg
    (oder entesprechende pytz-Version, die installiert wurde)

Usage:
    
    start info-beamer for this directory.
    Then run ./service