AWS snapshot backup

https://github.com/colinbjohnson/aws-missing-tools/tree/master/ec2-automate-backup
https://aws.amazon.com/answers/infrastructure-management/ebs-snapshot-scheduler/
https://gist.github.com/zenmaster24/9bb18ef04900cc763c31769ef27d116a
http://www.n2ws.com/products-services/pricing-registration.html