Fix issue #103: resolving config file pathname.

My proposal: just let the os.Open() call do the path resolution,
don't try to outsmart it by joining os.Getwd to *configFile.
Merge pull request #105 from rakitzis/path

Fix issue #103: resolving config file pathname.

This is sensible.  The kernel will do this for us anyway.

LGTM: iansmith