title: Karma reporter with Grunt prints [object Object] instead of describe strings
body: <p>With grunt, my failing tests output like so:</p>
  
  <p><code>Chrome 37.0.2062 (Mac OS X 10.9.5) [object Object] [object Object] [object Object] [object Object] [object Object] [object Object] [object Object] [object Object] [object Object] [object Object] [object Object] [object Object] [object Object] [object Object] [object Object] [object Object] [object Object] [object Object] [object Object] [object Object] should return full list if no filter options are set FAILED</code></p>
  
  <p>When I run the tests without grunt, the describe strings get printed just fine.</p>
  
  <p>Grunt 0.4.5
  Karma 0.12.23
  Karma-Jasmine 0.2.0
  Grunt-Karma 0.9.0</p>