Remove log/pid file defaults

Feels like it is better to just use the defaults provided by `dante` rather than defaulting relative to the script (e.g. I'm putting the ruby script in `/usr/local/bin` so it is trying to log to `/usr/local/log` by default). Even when not running in daemon mode, it appears like `dante` expects the log/run directories to exist anyway.

I realize this is personal opinion though, so I understand if you want to keep the behaviour.