docs(guide): The CLI moved into a separate package: webpack-cli

[kumarbhot]

Executing webpack is now possible with webpack-cli instead of just webpack. Added that to npm installation step as well as the final execution instruction. A little unsure about how to add mention to the --mode flag.

[jsf-clabot]

All committers have signed the CLA.

[skipjack]

@jeremenichelli maybe this should be re-targeted at next if you're going to merge soon?

Always displaying the latest version number in the badge in the sidebar has definitely caused some confusion (e.g. #1854). We should start tagging the repo and versioning the package.json with the currently documented version using something like standard-version. This would allow us to easily identify where documentation for each version lies. Related to #1856 and my comment there as well.

cc @jeremenichelli @montogeek @TheDutchCoder

[TheDutchCoder]

Hi @kumarbhot thanks for your contribution!

We're actually in the process of updating the docs for v4 and this particular change was already merged into the next branch: 650f69e

We're also planning on making versioned docs.