waynehoover/s3_direct_upload — pull request #11 by pomartel (2012-11-02 14:49:23+00:00)
Title: Fixed S3 policy error regarding expiry format

I'm not sure about this one but I was getting `Invalid Policy: Invalid 'expiration' value` when uploading to S3. I googled it and found someone else having the same problem : https://github.com/dwilkie/carrierwave_direct/pull/20

I converted the time to iso8601 like he did and it worked.