title: how to read a xls file with phpexcel bundle? in Symfony2
body: <p>The bundle phpExcel provide the way for write xls files, but i don't know how read a file xls with this bundle..
  the bundle can be found at the following address : <a href="http://knpbundles.com/liuggio/ExcelBundle" rel="noreferrer">http://knpbundles.com/liuggio/ExcelBundle</a></p>
  
  <p>Thanks for your help </p>