"soungs not found" in README

[AlexKalopsia]

Thank you for this amazing tool. After running it and doing a full migration I started manually saving info from the terminal regarding the missing tracks. At some point I was like "You know what, I'll make a PR so that this is also exported somewhere" and only then I realized it is already part of the tool, and the missing songs are stored in the txt file.

I would suggest that this feature could be mentioned in the README file.

[timrae]

You can open a PR for the readme if you like 👍

[AlexKalopsia]

I'll do that, I know some people don't love such small contributions, bit I'll fix it soon.