Updates README on aws creds and openssl install.
Updates README on aws creds and openssl install.

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