title: How to generate an Excel file with Rails?
body: <p>I was searching Ruby toolbox for a popular, well-supported tool to generate XSLX (Excel 2007 and on) document, but I didn't manage to find anything.
  I also spent a good amount of time searching on Google, but most of the answers I found seem outdated.</p>
  
  <p><strong>I'll need to include inline images in the document I generate.</strong></p>
  
  <p>I'm working with Ruby 1.9.2 and Rails 3.</p>
  
  <p>Any suggestions?</p>
  
  <p>Thank you very much!</p>