title: NUnit Categories not showing up in Visual Studio
body: <p>I want to custom group my tests by function so I'm using the nunit Category attribute, like this:</p>
  
  <pre><code>[Test, Category("Cat1")]
  public void SomeMethod() { }
  
  [Test, Category("Cat2")]
  public void AnotherMethod() { }
  </code></pre>
  
  <p>But in Visual Studio the categories do not show up, all I see are the defaults to group by duration or test outcome. I'm using:</p>
  
  <ul>
  <li>NUnit 2.6.4</li>
  <li>Visual Studio 2012</li>
  <li>NUnit Test Adapter 2.0.0.0</li>
  </ul>
  
  <p>What am I missing? This seems like it should be a no-brainer</p>