title: add url to the whitelist in cordova.plist file in iphone at runtime with phonegap
body: <p>i am making an mobile application of the site <a href="http://www.turrg.com" rel="nofollow">http://www.turrg.com</a> in phonegap its all working fine with android but in case of iphone i have to add url domain name to the whitelist in cordova.plist file. but in site data is coming from different-2 sites so i have to add the domain name of these sites to the whitelist in cordova.plist file is there any solution that i ads these domain name at dynamically means add automatically when new domain names are added to the turrg site..
  added domain name in cordova.plist file like this.</p>
  
  <pre><code> &lt;key&gt;ExternalHosts&lt;/key&gt;
         &lt;array&gt;
                 &lt;string&gt;*.facebook.com&lt;/string&gt;
         &lt;/array&gt;
  </code></pre>
  
  <p>how can i add this type of domain name in that file automatically when site has new domain name.
  please help me
  Thanks in advance.</p>