title: Blob charset for CSV file
body: <p>I would like to create a CSV file using blob. 
  The file should be encoded in ANSI, but it doesn't work.</p>
  
  <pre><code>var blob = new Blob(["\ufeff", csvFile], { type: 'text/csv;charset=windows-1252;' });
  </code></pre>
  
  <p>The file is always created with UTF-8 encoding.</p>