Fixes #19, where user can now pass ssh_user for local deployments
Tweaks:

validates hadoop and hbase configurations
based on the OS will generate the urls
adds logic to validate hadoop and hbase config(s)
adds helper arrays to validate config(s)
Adds support to ubuntu OS, part of #10
Updates puppet installer to use modules v1.0
Feature: ability to delete volumes attached to instances
updates readme
updates readme