docs: minimal application example

Reviewed-by: Tibor Simko <tibor.simko@cern.ch>
Signed-off-by: Jiri Kuncar <jiri.kuncar@cern.ch>
docs: fix GitHub fork link

* Fixes configuration of GitHub fork.  (closes #9)

Reported-by: Kai Wohlfahrt <kai.scorpio@gmail.com>
Signed-off-by: Jiri Kuncar <jiri.kuncar@cern.ch>