title: Can not add android platform to cordova
body: <p>I tried to add - cordova add platform android and ended up with the following error:</p>
  
  <pre><code> npm http GET https://registry.npmjs.org/cordova-android
   npm http 401 https://registry.npmjs.org/cordova-android
   npm ERR! registry error parsing json
   Unable to fetch platform android: SyntaxError: Unexpected token &lt;
   &lt;HEAD&gt;&lt;TITLE&gt;Authorization Required&lt;/TITLE&gt;&lt;/HEAD&gt;
   &lt;BODY BGCOLOR="white" FGCOLOR="black"&gt;&lt;H1&gt;Authorization Required&lt;/H1&gt;&lt;HR&gt;
   &lt;FONT FACE="Helvetica,Arial"&gt;&lt;B&gt;
   Description: Authorization is required for access to this proxy&lt;/B&gt;&lt;/FONT&gt;
   &lt;HR&gt;
   &lt;!-- default "Authorization Required" response (401) --&gt;
  </code></pre>
  
  <p>How do I overcome this?</p>