add devel,test,prod files to reflect environment design pattern in these modules.
add or amend template json for configuring RDS in a VPC.
by default dont rollback so we can debug any deployment issues.
add an option to take a custom name for the stack.
significant template work to create a working 3 tier VPC.
Merge remote-tracking branch 'master on huit repo'
Merge pull request #9 from robparrott/master

Working VPC three tier with some elements in place.