debian/ubuntu package files

Please check list of files to install: I have no idea what has to be installed, and there was no 'install' rule in Makefile, so I added single file install into /usr/bin/snabbsandwich

If there are more files (config file, man page, scripts, crontab entries), or if /usr/sbin fits better for snabbsandwich (like, if this root-only program) - let me know.

I added some description/URLS in control file, rest of package is fresh out of dh_make — lots of example stuff and such.