README updated
README updated

outcoldman/docker-backup-to-s3,jwhitcraft/docker-backup-to-s3,InAnimaTe/docker-sync-s3,melke/docker-backup-to-s3,istepanov/docker-backup-to-s3,robbydooo/docker-backup-to-s3,YourCursus/docker-pg_dump-to-swift