Update basic_usage.rst
Update basic_usage.rst

Added documentation for the optional logging setup needed for the clients.
AlexanderplUs/kazoo,tempbottle/kazoo,kormat/kazoo,bsanders/kazoo,python-zk/kazoo,python-zk/kazoo,rockerbox/kazoo,rockerbox/kazoo,jacksontj/kazoo,pombredanne/kazoo,kormat/kazoo,max0d41/kazoo,tempbottle/kazoo,bsanders/kazoo,harlowja/kazoo,jacksontj/kazoo,rgs1/kazoo,max0d41/kazoo,AlexanderplUs/kazoo,Asana/kazoo,harlowja/kazoo,rgs1/kazoo,pombredanne/kazoo