Add ipv6 address example to KazooClient docstring
Add ipv6 address example to KazooClient docstring

Asana/kazoo,rackerlabs/kazoo,rockerbox/kazoo,pombredanne/kazoo,bsanders/kazoo,jacksontj/kazoo,kormat/kazoo,harlowja/kazoo,rackerlabs/kazoo,kormat/kazoo,rgs1/kazoo,python-zk/kazoo,tempbottle/kazoo,jacksontj/kazoo,AlexanderplUs/kazoo,rockerbox/kazoo,harlowja/kazoo,pombredanne/kazoo,AlexanderplUs/kazoo,tempbottle/kazoo,python-zk/kazoo,bsanders/kazoo,max0d41/kazoo,rgs1/kazoo,max0d41/kazoo