Provide install description for composer
Alex reported an issue
As composer usage gets more and more important it would be nice if there's a proper install description / snippet.
Reported URL:https://extensions.typo3.org/extension/news/
User Agent:Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.186 Safari/537.36