title: Where is the sSwfPath path when using jquery-datatables-rails gem
body: <p>I have set up Data Tables in my rails 4.1 project using the rweng/jquery-datatables-rails gem.</p>
  
  <p>Everything works great except the Table Tools extension. The buttons show but they do not work.</p>
  
  <p>I finally figured out that the reason the buttons don't work id because the path:</p>
  
  <p>sSwfPath": "/swf/copy_csv_xls_pdf.swf"</p>
  
  <p>Does not exist.</p>
  
  <p>The path is obviously within the gem file somewhere, but I've got no idea how to find it.</p>
  
  <p>I finally got it to work by setting the path to:</p>
  
  <p>sSwfPath": "<a href="http://cdn.datatables.net/tabletools/2.2.2/swf/copy_csv_xls_pdf.swf" rel="nofollow">http://cdn.datatables.net/tabletools/2.2.2/swf/copy_csv_xls_pdf.swf</a>"</p>
  
  <p>But I'm not sure if this is the correct way to go. Would rather use a local copy.</p>
  
  <p>Many thanks</p>