Wrapper around aws cli's cloudformation signal-resource to handle retries & errors. Intended to be used to send success signals from instances in an Auto Scaling Group using UpdatePolicy.
$ curl -s https://s3.amazonaws.com/mapbox/apps/aws-cfn-signalresource/v0.2.0 | bash
npm install aws-cfn-signalresourcenpm linkaws-cfn-signalresource