Make -d optional and default it to the current directory #8
Description
When I use should_clean, I usually need to run it in the current directory. should_clean -d . works fine, but I think it would be very useful if it defaulted to the current directory so should_clean would work alone. Besides, several similar tools like transpec and rubocop already default to scanning the current directory when no paths are given.
I tried to implement this myself, though I'm having a hard time getting -d to default to a value without any errors.