title: How to do an "or" in chai should
body: <p>How do I do an <code>or</code> test with <code>chai.should</code>?</p>
  <p>e.g. something like</p>
  <pre><code>total.should.equal(4).or.equal(5)
  </code></pre>
  <p>or</p>
  <pre><code>total.should.equal.any(4,5)
  </code></pre>
  <p>What's the right syntax?  I couldn't find anything in the documentation.</p>