Add Puppet instructions to run the PTGbot IRC bot. This
is based on the puppet-statusbot module, and tweaked to
conform to PTGbot configuration file format.
Configurable elements include bot nickname, password, and
channel. Other elements (like ethercalc pointers) will
require to be refreshed in this module for each PTG event.
The next step would be to set up a web server to serve
static content from /var/lib/ptgbot/www.
Change-Id: Ia3c5a44c33dab1914c9908280bec1323e35431f2
7449a8db0d