title: Accelerate S3 upload with paperclip
body: <p>I'm using paperclip for uploading images in S3.
  But I've noted that this upload is very slow. I think because before complete the submit the file has to pass by my server, be processed and be sent to the S3 server.</p>
  
  <p>Is there a method for accelerate this?</p>
  
  <p>thanks</p>