Chef SNS Notification support added
Adding xml cookbook - dependency for chef_handler_sns
Adding chef_handler cookbooks for sns notification
Adding build-essential as depencendy for xml
Bugfix: Forgot one variable rename during rubocop-refactoring
Temp disabling a rubocop warning for build-essential
Relocating rubocop config into cookbook
Merge pull request #317 from fh/t/instance-notification

SNS Notification for failed instances