Amazon S3 static website hosting bucket policy: http://docs.aws.amazon.com/AmazonS3/latest/dev/website-hosting-custom-domain-walkthrough.html

gistfile1.txt

{
  "Version":"2012-10-17",
  "Statement":[{
        "Sid":"AddPerm",
        "Effect":"Allow",
          "Principal": "*",
      "Action":["s3:GetObject"],
      "Resource":["arn:aws:s3:::example.com/*"
      ]
    }
  ]
}