title: How to download a file by Meteor?
body: <p>I am developing a system where the User need to download a PDF file that was generated by phantomJS and saved on the server. 
  This is the code that generates the file and saved to the server:</p>
  
  <pre><code>var pdf = Meteor.require('phantomjs-pdf');
      var options = {'html': data};
  
      pdf.convert(options, function(result) {
  
          /* Using a buffer and callback */
          result.toBuffer(function(returnedBuffer) {});
  
          /* Using a readable stream */
          var stream = result.toStream();
  
          /* Using the temp file path */
          var tmpPath = result.getTmpPath();
  
          /* Using the file writer and callback */
          result.toFile("/tmp/file.pdf", function() {});
      });
  </code></pre>
  
  <p>It appears that at phantomJS can not download then how can I download the file?</p>