OKay, this works great for me.
<?xml version="1.0" encoding="UTF-8" ?>
<widget xmlns = "http://www.w3.org/ns/widgets"
xmlns:gap = "http://phonegap.com/ns/1.0"
id = "com.phonegap.example"
versionCode = "10"
version = "1.0.0" >
<!-- versionCode is optional and Android only -->
<name>PhoneGap Example</name>
<description>
An example for phonegap build docs.
</description>
<author href="https://build.phonegap.com" email="support@phonegap.com">
Hardeep Shoker
</author>
<!-- We'll include the Barcode plugin as an example -->
<gap:plugin name="com.phonegap.plugins.barcodescanner" />