title: Save a picture in S3 from a temporary URL
body: <p>I am developing a website on ruby on rails where users can upload pictures thanks to <strong>paperclip</strong>, it is stored in <strong>amazon S3</strong>. After, they can modify pictures thanks to <strong>aviary</strong>. But when i want to save the new pictures, aviary just gave me an temporary URL where i can get my modified picture.</p>
  
  <p>Does paperclip can do it  ? I don't think it can save an picture from an URL and store it to S3 ?</p>
  
  <p>I've searched for a week now, and i don't know the best way to do it. I've read about <strong>filepicker</strong>, but the account to store data in S3 files isn't free ...</p>
  
  <p>Finally i've heard about this <strong>s3</strong> <a href="https://github.com/qoobaa/s3" rel="nofollow">https://github.com/qoobaa/s3</a>, but i don't understand how to use it. I have installed gem s3, but when i set <code>require 's3'</code> , it is not recognize.</p>
  
  <p>What is the best to do? </p>