plugin.xml

<?xml version="1.0" encoding="UTF-8"?>
<plugin xmlns="http://apache.org/cordova/ns/plugins/1.0"
        id="cordova-simple-volume" version="1.0.1">
    <name>Cordova simple volume control</name>
    <description>Control volume and Receive volume events (iOS /Android)</description>
    <license>Apache 2.0</license>
    <keywords>cordova,volume,ios,buttons</keywords>
    <js-module src="www/volumeControl.js" name="VolumeControl">
        <clobbers target="volumeControl" />
    </js-module>

    <platform name="android">
      <config-file target="res/xml/config.xml" parent="/*">
        <feature name="VolumeControl">
          <param name="android-package" value="com.cordova.volumeControl.VolumeControl"/>
        </feature>
      </config-file>

      <source-file src="src/android/VolumeControl.java" target-dir="src/com/cordova/volumeControl/"/>
      <source-file src="src/android/VolumeObserver.java" target-dir="src/com/cordova/volumeControl/"/>
    </platform>

    <platform name="ios">
        <header-file src="src/ios/VolumeControl.h" />
        <source-file src="src/ios/VolumeControl.m" />
        <config-file target="config.xml" parent="/widget">
         <feature name="VolumeControl">
           <param name="ios-package" value="VolumeControl" />
         </feature>
    </config-file>
    </platform>
  </plugin>