Update nan to latest version
Update nan to latest version

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