README should indicate this project is abandoned

[grempe]

The rocco gem is currently broken for everyone who installs it. At the minimum it points to a stylesheet that is no longer at the location it is hardcoded to point to which means the main github docs page for this repository is unstyled, as are the docs generated by anyone who installs it.

See: https://rtomayko.github.io/rocco/

This was apparently fixed in the source code two years ago but no release was pushed.

63ed464

Rubygems has not been updated with a new release in almost four years.

https://rubygems.org/gems/rocco

Its OK of course if you don't want to support it anymore but please change the README to indicate that the project is no longer supported if that is in fact the case. The pull request and bug backlog would also seem to indicate it is abandoned. Without a clear indication that it is abandoned, people like me will waste their time trying to figure out why it is so broken, and lead them down a path of sad discovery which led me to filing this request.

Cheers.

[hellojustin]

@grempe & @rtomayko - I recently had a need for Rocco, so I forked this repo here and made it work. I would be happy to contribute my changes back to this repo or take over maintenance of the gem. Let me know if/how I can help.