Replace [bucket_name] with your own bucket name.

aws.json

{
  "Statement": [
    {
      "Action": [ 
        "s3:DeleteObject",
        "s3:GetObject",
        "s3:GetObjectAcl",
        "s3:ListBucket",
        "s3:PutObject",
        "s3:PutObjectAcl"
      ],
      "Effect": "Allow",
      "Resource": [
          "arn:aws:s3:::[bucket_name]",
          "arn:aws:s3:::[bucket_name]/*"
      ]
    }
  ]
}