Update README.md

[ianmiell]

I'm not sure if this is a local setting, but I couldn't find anything in my env related to this.

[phiresky]

They are local programs, they are installed into node_modules under the current working directory by npm install xyz. If they are installed in ~ for you the reason is that you have a package.json in your home directory, but not in your current working directory. Delete the package.json in your home directory (or create one in the current directory with npm init)