add verbose exception docs to client API's
add verbose exception docs to client API's

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