title: Uploading thousands of images with Paperclip to S3
body: <p>I have ~16,000 images I'm trying to upload to Amazon. Right now, they're on my local file system.  I'd like to upload them to S3 using Paperclip, but I do NOT want to upload them to my server first.  I'm using Heroku and they limit slug size.  </p>
  
  <p>Is there a way to use a rake task to upload the images directly from my local file system to S3 via Paperclip?</p>