examples/multipart-s3/README.md

use : https://github.com/rusoto/rusoto

https://www.rusoto.org/regions.html https://docs.rs/rusoto_core/0.42.0/rusoto_core/enum.Region.html

1. set env AWS_ACCESS_KEY_ID

2. set env AWS_SECRET_ACCESS_KEY

3. set env AWS_S3_BUCKET_NAME

4. multipart/post aws-s3 upload

5. multipart/post post-data to struct