Document "put" rename behavior in versioned buckets
Document "put" rename behavior in versioned buckets

When using a versioned bucket and specifying a "versioned_file", the
file you upload can have an arbitrary name on the local filesystem;
the out command will upload it with the "versioned_file" name.

Signed-off-by: Evan Short <5b1db704470d35a058f1f4a9e1a5a172a6ea69d3@pivotal.io>

concourse/s3-resource,Pivotal-DataFabric/s3-resource,dgodd/ssh-resource,Pivotal-DataFabric/s3-resource,dgodd/ssh-resource,zachgersh/s3-resource,concourse/s3-resource,zachgersh/s3-resource