title: ruby csv file encoded to utf-8 but windows excel not recognising
body: <p>In ruby i am generating CSV file while opening the file I mentioned it as UTF-8 encoding. The code is given below.In linux and mac it is working fine but in windows when i am trying to open the csv file excel  is not recognizing as UTF-8. What can i do so that windows does recognize it as UTF-8 encoding.
      <code>CSV.open(File.join(Rails.public_path,"/csv_uploads/#{csv_name}.csv")</code>, "w:UTF-8"). </p>
  
  <p>I even manually encode the items in the file to UTF-8. </p>
  
  <pre><code>`result[2].encode('UTF-8')`.
  </code></pre>