Allow public read access to s3 bucket (S3 tab -> Edit bucket policy -> paste in textarea -> money!)

allow_public_read.json

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