Adopt nan for V8 visible method and property definitions
Adopt nan for V8 visible method and property definitions

dfsxdev/node-zookeeper,yfinkelstein/node-zookeeper,mdlavin/node-zookeeper,mdlavin/node-zookeeper,dfsxdev/node-zookeeper,mdlavin/node-zookeeper,mdlavin/node-zookeeper,dfsxdev/node-zookeeper,dfsxdev/node-zookeeper,yfinkelstein/node-zookeeper,dfsxdev/node-zookeeper,yfinkelstein/node-zookeeper,mdlavin/node-zookeeper,yfinkelstein/node-zookeeper