Hi,

I just spent a little while trying to figure out why my Attachment URLs were http instead of https. I started looking in my AWS config at first, where HTTPS is the default, and then finally came across the Paperclip documentation which states the following:

    # * +s3_protocol+: The protocol for the URLs generated to your S3 assets. Can be either
    #   'http', 'https', or an empty string to generate protocol-relative URLs. Defaults to 'http'
    #   when your :s3_permissions are :public_read (the default), and 'https' when your
    #   :s3_permissions are anything else.

I don't quite see why we'd want to default to http based on s3_permissions. If anything, we should look at the AWS settings and use that protocol?