title: .createreadstream value to string variable
body: <p>How can I set a variable equal to the data that fs.createReadStream returns, so I can print out that variable and then I'll get the file contents.</p>
  
  <pre><code>var rs = fs.createReadStream('file.txt', {encoding: 'utf8'});
  </code></pre>
  
  <p>How can I get the returned data into a variable for later usage.</p>
  
  <p>Thanks</p>