title: Issue initializing a JSONObject
body: <p>I'm trying to initialize a JSONObject with the following string, received from a web service:</p>
  
  <pre><code>"{
      "campaignid": "8",
      "campaignname": "Pilotarienak 2011",
      "campaignlink": "http:\\/\\/www.xxx.com\\/fr\\/cote-basque\\/agenda\\/2011-05-20\\/FMAAQU064FS016DV-pilotarienak-d-anglet?fromapp",
      "splash": "http:\\/\\/www.xxx.com\\/ads\\/customers\\/pilotarienak\\/320x480.jpg",
      "banner": "http:\\/\\/www.xxx.com\\/ads\\/customers\\/pilotarienak\\/320x160.jpg"
  }"
  </code></pre>
  
  <p>It seems to be valid json (it validates in jsonlint.com), but when initializing a JSONObject with that I get:</p>
  
  <pre><code>org.json.JSONException: Value  of type java.lang.String cannot be converted to JSONObject
  </code></pre>
  
  <p>Anybody can help?</p>
  
  <p>Thanks</p>