Add ZooKeeper backend to examples

Change-Id: I8c9408465392307ede2ff61e0524700e4c51ccad
Fix few spelling and grammar errors

Change-Id: I8e678a9f76cba3d90053d28baf4ff42d34b4e390
Move some common/to be shared kazoo utils to kazoo_utils

Stopping and closing in a way that will avoid the current
kazoo bug will be a common utility function so move it to
kazoo_utils. The other common utility function will be version
checking so move that as well to kazoo_utils (and improve it
to allow for checking against a max version).

Change-Id: I81dfd9c01a00d7491b973d65d3b38f61b29dd298
Merge "Add ZooKeeper backend to examples"
Remove extraneous vim configuration comments

Change-Id: I06eada275398adc3523c02a99d9e4650e2dd1637
Merge "Fix few spelling and grammar errors"
Merge "Move some common/to be shared kazoo utils to kazoo_utils"
Merge "Remove extraneous vim configuration comments"