Adds what env vars to set for AWS creds.
Adds what env vars to set for AWS creds.

rusoto/rusoto,DualSpark/rust-aws,mthjones/rusoto,mattico/rusoto,DualSpark/rust-aws,mattico/rusoto,mattico/rusoto,rusoto/rusoto,DualSpark/rust-aws,noggleboggle/rusoto,SecurityInsanity/rusoto,DualSpark/rusoto,DualSpark/rusoto,indiv0/rusoto,cmsd2/rusoto,ford-prefect/rusoto,DualSpark/rusoto,rusoto/rusoto,mthjones/rusoto,ford-prefect/rusoto,SecurityInsanity/rusoto