[Mailman-Developers] no documentation for Mailman 3.0

[David]

Build the online docs by running::

    % bin/docs

root at localhost:/opt/mailman-3.0.0b1# bin/docs
-bash: bin/docs: No such file or directory

root at localhost:/opt/mailman-3.0.0b1/bin# ls
buildout  mailman  master  onebounce  py  runner  tags  test