use s3gof3r for downloading
use s3gof3r for downloading

Signed-off-by: Chris Brown <eb0819782e2e967e3d4f4d71eab0c647ed2659cf@pivotal.io>

Pivotal-DataFabric/s3-resource,concourse/s3-resource,pivotal-cf-experimental/s3-resource,pivotal-cf-experimental/s3-resource,Pivotal-DataFabric/s3-resource,concourse/s3-resource,zachgersh/s3-resource,dgodd/ssh-resource,dgodd/ssh-resource,zachgersh/s3-resource