https://wiki.c3d2.de/C3D2-Web

1)
  :-$ git clone
2)
  :-$ geany content/events.xml
3.1)
  :-$ make
3.2)
  :-$ firefox www/calendar.html
4)
  :-$ git add content/events.xml
5)
  :-$ git commit -m "open data meetups > calender"
6)
  :-$ git push
7)
  :-$ firefox https://c3d2.de/calendar.html