title: Print message after booting vagrant machine with "vagrant up"
body: <p>I need to display a message on the completion of the <code>vagrant up</code> command.</p>
  
  <p>I've tried defining a function:</p>
  
  <pre><code>def hello
      puts 'hello'
  end
  </code></pre>
  
  <p>And then calling it and the end of the file:</p>
  
  <pre><code>hello 
  </code></pre>
  
  <p>But it always prints at the <em>beginning</em> of the output rather than the end. How can I print a message at the end?</p>