Converting EC2 instance-store image to EBS

Some useful links:
http://blog.ianbeyer.com/2012/05/10/converting-ec2-s3instance-store-image-to-ebs/

http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/RootDeviceStorage.html#display-instance-root-device-type

 http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/creating-an-ami-instance-store.html