Changed readonly outputDirectory to ampFinalDir

package org.alfresco.maven.plugin;

import java.io.BufferedReader;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.FileReader;

import java.io.FileWriter;

import java.io.IOException;

import java.io.PrintWriter;

import java.util.Set;

import org.alfresco.maven.plugin.archiver.AmpArchiver;

    protected boolean includeDependencies;

    /**

     * Directory the build produces the AMP file in 

     * Directory of the final generated AMP

     *

     * @parameter default-value="${project.build.directory}"

     * @parameter property="maven.alfresco.ampFinalDir" default-value="${project.build.directory}"

     * @required

     * @readonly

     */

    protected File outputDirectory;

    protected File ampFinalDir;

    /**

     * (Read Only) Directory containing the classes and resource files that should be packaged into the JAR.

                "jar");

        File ampFile = getFile(

                this.outputDirectory,

                this.ampFinalDir,

                this.ampFinalName,

                this.classifier,

                "amp"