title: regex with match in GREL/OpenRefine
body: <p>I'm using OpenRefine to parse a column with string values.
  I want to find the cells that contain either: offer or discount.
  The string value is usually a sentence</p>
  <p>My code below is using the match function not working.
  using <code>value.contains()</code> is limited to searching for one word only.</p>
  <p><code>value.match(/.*(offer)|(discount)/)</code></p>