Removed warning about CRA@2

[pomek]

Suggested merge commit message (convention)

Docs: Removed warning about CRA@2. See ckeditor/ckeditor5-react#40 (comment).

[ma2ciek]

Later in the docs, there's still usage of the create-react-app@1 - https://github.com/ckeditor/ckeditor5/pull/1481/files#diff-bde8adc481cd75550e7606d2117fd48eR153. And I'd use there only yarn to install packages since the whole initial installation is done by yarn by default (or this is because I have yarn globally installed (?)).

Is it possible to run react app without ejecting config now?

[ma2ciek]

Without ejecting the SVGs are broken with our beloved error:

TypeError: Cannot read property 'getAttribute' of null
at IconView._updateXMLContent (iconview.js:121)
    at IconView.render (iconview.js:94)
	...

[pomek]

Is it possible to run react app without ejecting config now?

That's the goal of changing our sources…

Without ejecting the SVGs are broken with our beloved error:

The later in the same documentation:

The configuration needs to be ejected in order to be able to customize webpack configuration. To build CKEditor 5 from source you must load inline SVG images and handle CKEditor 5's CSS as well as correctly minify the ES6 source.

You can use ready-to-use builds without ejecting.

[pomek]

But if you would use CKEditor 5 Framework, you must eject the configuration.

[pomek]

Or create a new build and attach it to the React Component. Both ways are described in the documentation.