Various fixes

Provides a fix for #2, fixes a warning where path.existsSync is deprecated, and fixes an error that was introduced when I forgot to remove `stdin.resume()` after making my previous pull request.

I decided that removing the comments at the top of the PKGBUILD was the best choice for #2 because imo, if you don't know that you should add them, you shouldn't be using them in the first place. If you have a better option for this, I'm open to fixing it, otherwise, this should be fine.