title: unauthorized error code when accessing PARSE.COM
body: <p>I use the code bellow to access class Book on Parse.com</p>
  
  <pre><code>    public void GetBook()
      {
          string RequestString = "https://api.parse.com/1/classes/Book";
          string ApplicationId = "my Application ID";
          string RestApiKey = "my REST API Key";
  
          WebRequest webRequest = WebRequest.Create(RequestString);
  
          NetworkCredential streetCred = new NetworkCredential(ApplicationId, RestApiKey);
          webRequest.Credentials = streetCred;
          webRequest.Method = "GET";
          webRequest.Timeout = 100000;
          HttpWebResponse b = (HttpWebResponse)webRequest.GetResponse();
      }
  </code></pre>
  
  <p>This always results in a 401 Unauthorized response.
  What am I doing wrong ? </p>