title: How can JSON with an empty key be parsed into NSDictionary?
body: <p>I get a JSON response, that contains an empty key (""):</p>
  
  <pre><code>{
      "errors": {
          "": [
              "Wrong email and password combination"
          ]
      }
  }
  </code></pre>
  
  <p>Can this JSON be properly parsed into NSDictionary using JSONKit?</p>