added: deployment on OpenShift

Added deployment for OpenShift. Actually one can use this repo directly with OpenShift to obtain a working deployment, ...even he/she has no Git, Python, nor text editor installed -- what's needed is merely to follow the new application setup routine of OpenShift and enter the repo URL of this GitHub repository.

The original grabber.py has been changed: now it reads its command line arguments to obtain necessary information instead of requiring user interactive when running.