Can't build on Windows because addons-linter requires sharp which is hard to install on Windows

[matatk]

Can this be recommended by Landmarks, but just installed globally and used if present?

Actually, it does look possible to install fairly easily on Windows though does require Admin, and most people who fork/download this might just want to build it to run locally?

But then I get Error: `msbuild` failed with exit code: 1.

[matatk]

Oddly this problem seems to have disappeared now.

However, it is a good idea to add the easy method for installing node-gyp [actually the Windows build tools + Python] on Windows to the README, so leaving this open for now.

[matatk]

addons-linter has removed the sharp dependency.