Typo in requirements.txt

[MikePelton]

Hi - thanks for this phenomenal piece of work. There's a wee typo I think: "requirements.txt" references "pymcudes", pretty sure that should be "pymcubes"?

[swanilee]

I've solved the problem, so I'm leaving a comment to help.

To install "pymcubes", do $ pip install --upgrade PyMCubes

( Ref. https://github.com/pmneila/PyMCubes )

[yunzhiy]

Thank you for pointing out the existing errors and I have updated "requirements.txt".