title: WWW request send always en-US in Accept-Language
body: <p>Do you know how to send the right Accept-Language in Unity?
  I use the class WWW to perform the requests but it always send "en-US".</p>
  
  <p>Thanks for your answers !</p>
  
  <p>Here is my code:</p>
  
  <pre><code>// Header request
  Dictionary&lt;string, string&gt; headers = new Dictionary&lt;string, string&gt;();
  // My server code need this
  headers.Add ("Accept", "application/json");
  
  WWW w = new WWW (MY_URL, null, headers);
  yield return w;
  </code></pre>