title: orWhere has disappeared in zf2. How to replace it?
body: <p>Since zf2, orWhere is not possible anymore in query with Zend\Db
  I found here (<a href="https://stackoverflow.com/questions/13056820/zf2-how-to-orwhere">ZF2 How to orWhere()</a>) that it is possible to replace it.
  In my example, there is no 'like', only a query like:</p>
  
  <pre><code>$select-&gt;where("....")-&gt;orWhere("...")
  </code></pre>
  
  <p>If using PredicateSet is the only way, how can I use it to make my query?</p>