The class allows you to consume AWS services
In order to use the AWS SDK, you’ll first need to create a Aws Account access credentials.
The Aws constructor takes 3 parameters that constitute your AWS app's Auth credentials. You can find these in the Security Credentials section of your AWS account.
aws <- Aws(access_key, secret_key, region)
To publish a message to sns topic
aws.snsPublish("TopicArn", "Subject", "String message");