title: cygwin: timeout syntax always fails
body: <p>With Cygwin, I tried to use "timeout" to make my script sleep for a few seconds.
  But even when I did it according to its syntax it always asks me to <code>try --help</code>, meaning I gave the wrong forms. 
  Here are the things I've tried</p>
  
  <pre><code>timeout 5
  
  timeout 5s
  
  timeout 5.0s
  
  timeout 5.
  </code></pre>
  
  <p>None of which worked.</p>
  
  <p>Any ideas?!</p>