title: Fine Uploader: Change the file's name
body: <p>I'm trying to save files with some directory structure into my S3 bucket, but getName method only returns the reference not the value of the getName method. </p>
  
  <p>getName ---> [object Object].
  <a href="https://mybucket/2016/04/13/%5Bobject+Object%5D" rel="nofollow">https://mybucket/2016/04/13/%5Bobject+Object%5D</a></p>
  
  <pre><code>&lt;script&gt;
          $('#fine-uploader-s3').fineUploaderS3({
             debug: true,
              template: 'qq-template-s3',
              request: {
                  endpoint: "myendpoint.s3.amazonaws.com", 
                  accessKey: "my_key"
              },
              objectProperties: {
                  key: function (fileId) { 
                  return '2016/04/13/' + $("#fineuploader-s3").fineUploaderS3("getName",fileId); 
                  }
             }
  ...
  </code></pre>
  
  <p>How can I edit the name of the file to file's UID or file's name using the jQuery API? Tks in advance.</p>