title: SearchCriteria in White - Can't Find Name in Current Context
body: <p>I'm just beginning to use White for some test automation.  Pretty much every basic example shows use of SearchCriteria calls, e.g.:</p>
  
  <pre><code>Tab myTab = window.Get&lt;Tab&gt;(SearchCriteria.ByText("foo"));
  </code></pre>
  
  <p>I have the following included:</p>
  
  <pre><code>using TestStack.White;
  using TestStack.White.UIItems;
  using TestStack.White.UIItems.WindowItems;
  using TestStack.White.UIItems.TabItems;
  using TestStack.White.UIItems.WPFUIItems;
  using TestStack.White.WindowsAPI;
  
  using Xunit;
  </code></pre>
  
  <p>What am I missing?  Other calls seem to be working just fine, but SearchCriteria doesn't seem to exist.</p>