title: Elasticsearch highlighting - not working
body: <p>I have the following problem:</p>
  
  <p>I'm doing some tests with facetings</p>
  
  <p>My script is as follows:</p>
  
  <p><a href="https://gist.github.com/nayelisantacruz/6610862" rel="nofollow">https://gist.github.com/nayelisantacruz/6610862</a></p>
  
  <p>the result I get is as follows:</p>
  
  <pre><code>{
      "took": 2,
      "timed_out": false,
      "_shards": {
          "total": 5,
          "successful": 5,
          "failed": 0
      },
      "hits": {
          "total": 2,
          "max_score": 1,
          "hits": []
      },
      "facets": {
          "title": {
              "_type": "terms",
              "missing": 0,
              "total": 2,
              "other": 0,
              "terms": [
                  {
                      "term": "JavaScript",
                      "count": 1
                  },
                  {
                      "term": "Java Platform, Standard Edition",
                      "count": 1
                  }
              ]
          }
      }
  }
  </code></pre>
  
  <p>which is fine, but the problem is that I can not display the "highlighting"</p>
  
  <p>I was expecting a result like the following:</p>
  
  <p>..........
  ..........
  ..........</p>
  
  <pre><code>"facets": {
      "title": {
          "_type": "terms",
          "missing": 0,
          "total": 2,
          "other": 0,
          "terms": [
              {
                  "term": "&lt;b&gt;Java&lt;/b&gt;Script",
                  "count": 1
              },
              {
                  "term": "&lt;b&gt;Java&lt;/b&gt; Platform, Standard Edition",
                  "count": 1
              }
          ]
      }
  }
  </code></pre>
  
  <p>..........
  ..........
  ..........</p>
  
  <p>Anyone can help me and tell me what I'm doing wrong or what I'm missing, please</p>
  
  <p>Thank you very much for your attention</p>