main: add support for configuration file
main: add support for configuration file

Look for configuration file in local directory or in etc/
directory and read it if found. Bail out if there is no configuration
file available.

Signed-off-by: Ilija Hadzic <47a09d4a4430975766160361f65fc72633be50b6@gmail.com>

ihadzic/jim,ihadzic/jim,ihadzic/jim