Consider using package.json `engines` instead of checking for node version in index.js about create-whisk-action

[macdonst]

@filmaj from the docs:

Unless the user has set the engine-strict config flag, this field is advisory only and will only produce warnings when your package is installed as a dependency.

and engines-strict was removed in npm 3.0.0.

I did a quick test using the engines property and specifying node >= 12 and the package still installed. So I think we are stuck with the way it works now unless I'm missing something.

[filmaj]

Well, then, crap. Closing this down.