setuptools and wheel missing from dependency list

[TheParadoxBox]

While setting up, I was unable to install playsound successfully. Thanks to this post on StackOverflow, I was able to solve it by adding wheel and setuptools to the virtual environment. I don't have the most experience with Python packages, so I'm not quite sure what they do. Regardless, they should be added to the README as dependencies. I'm not sure quite what they do, so I'm not going to add them with a PR, but I thought you should know.