walkFunc - Should be path arg absolute?

[saeta-eth]

Hi.

Thanks for this amazing library. It's really helpful. I was doing some tests to implement it in the project in which I work at this time.

I figured out the returned path is relative to the current directory where the scan is running. Therefore, it makes impossible to take some actions within the callback function (walkFunc).

I have changed it on my fork. Let me know if you are interested on it and I can create a PR.