cordova inappbilling error package.json is invalid
<p>I am developing a cordova based app.</p>

<p>When I am trying to add this plugin I am getting this error</p>

<blockquote>
  <p>Error:Invalid package.json</p>
</blockquote>

<p><a href="https://github.com/poiuytrez/AndroidInAppBilling" rel="nofollow">https://github.com/poiuytrez/AndroidInAppBilling</a></p>

<p>I followed this </p>

<p>Here is my code</p>

<pre><code>cordova plugin add C:/Users/xxxxx/fbapp/plugins/AndroidInAppBilling --variable BILLING_KEY="xxxxxxxxxxxxxxxxxxxxxxxxxxx"
</code></pre>