title: Roo deprecated roo method
body: <p>Using roo gem on Windows with the following code:</p>
  
  <pre><code>require 'roo'
  require 'roo-xls'
  
  workbook = Roo::Excel.new 'test.xls'
  </code></pre>
  
  <p>I get message to STDOUT</p>
  
  <pre><code>[DEPRECATION] extend Roo::Tempdir and use its .make_tempdir instead
  </code></pre>
  
  <p>The code works fine after that, I am able to do everyting I want. However, I want to get rid of this message (without making a new class or anything like that, it's just opening a file... right?). How do I do that?</p>