Adds the manifest and all support files to the zip file
        :return:

def _zip_files(self):
        """
        Adds the manifest and all support files to the zip file
        :return:
        """
        # Create the zip file
        zip = zipfile.ZipFile(self.name + '.zip', 'w', zipfile.ZIP_DEFLATED)

        # Add the manifest file to the zip
        zip.write(MANIFEST_FILE_NAME)

        # Add the support files to the zip
        for file in self.support_files:
            zip.write(file)

        # Close the zip file
        zip.close()