Empathy's help manual

[Xavier Claessens <xclaesse gmail com>]

Hello,

Milo Casagrande started the Empath's user manual some months ago.
Unfortunately it still need lots of improvements and I don't think Milo
continued to work on it.

It would be great if someone from the gnome doc team could help Milo to
finish the doc.

Thanks!

Xavier Claessens.