[ALL] Javadoc.io - a new GitHub badge for our projects?

[Benedikt Ritter]

Hi,

I just became aware of https://javadoc.io/ <https://javadoc.io/> a website 
which provides hosting for all javadocs on Maven Central. They also provide 
badges for GitHub. Do we want to add this to our README.md files?

Cheers,
Benedikt