Merge pull request #3 from akhalymon/master

cluster snapshot CLI tool for VirtualBox.
Added scripts for deploying a cluster via blueprint.
Added README for blueprint-demo
Update README.md

Updated README.md for blueprint-demo
Update README.md
Fixed json file for blueprint-demo
Add Blueprint examples for Ambari 1.7.0.
Update deploy-cluster-170.json
Update README.md
Update node.js from 0.10.15 to 0.10.31
Updated node version to 0.10.31.
Added win7 folder.
Merge pull request #1 from u39kun/master

Merge changes from upstream