fix to include context and handle script mgmt.
add in a basic unmabaged simple website, and a two-tier simple website example.
work on refactoring host and fleets consistently to separate app from cloudformation components.
macro-ize instance params
add in a simpler two-tier pattern with two ELBs and autoscaling groups.
moving various example closer to being built using mscros.
tweaks to YAML and script to get simple web example  running.
roll hu-aws into hu with a driver option which defaults to aws.