docs(windows): Use other command for installing windows-build-tools

[TimPietrusky]

The command in the docs takes forever and sometimes doesn't even finish.

I found this one just works: npm install --global [email protected]

From felixrieseberg/windows-build-tools#179

[2xAA]

npm install --global --production windows-build-tools --vs2017
npm config set msvs_version 2017

This worked for me. I guess the newest version needs a version explicitly set for some reason?
Even though it does say VS2017 is the default.

[TimPietrusky]

It seems that node already comes with tools to build on windows and we don't need this anymore, see https://github.com/felixrieseberg/windows-build-tools

[2xAA]

Depends how you install node.
My preferred method is using nvm, or nvm-windows.

nvm-windows doesn't install any build tools.
coreybutler/nvm-windows#627