print help if no application parameters are given

Change-Id: I44446d9722104517836376e4ea480a633b7e2511
Reviewed-on: http://gerrit.esdi-community.eu/3178
Tested-by: Jenkins <sitemple@igd.fraunhofer.de>
Reviewed-by: Simon Templer <simon.templer@igd.fraunhofer.de>