Add a reference to the Perl bindings

Signed-off-by: Florian Ragwitz <rafl@debian.org>
Signed-off-by: Martin Sustrik <sustrik@250bpm.com>
Add state digrams for v0.1 branch
PIPELINE replaces FANIN and FANOUT
Merge pull request #107 from tailhook/site_with_state_diagrams

Add state digrams for v0.1 branch
State transition diagrams linked from "development" page

Signed-off-by: Martin Sustrik <sustrik@250bpm.com>
Now that the Perl bindings are on CPAN, link there

In contrast to the github repository page, that'll have all the documentation as
well as links back to the repo.