code: function updateConfig(target) {
  	try {
  		var contents = fs.readFileSync(path.join(__dirname, '../../config.xml'), 'utf-8');
  		if (contents) {
  			// Windows is the BOM. Skip the Byte Order Mark.
  			contents = contents.substring(contents.indexOf('<'));
  		}
  
  		var doc = new et.ElementTree(et.XML(contents));
  		var root = doc.getroot();
  
  		if (root.tag !== 'widget') {
  			throw new Error('config.xml has incorrect root node name (expected "widget", was "' + root.tag + '")');
  		}
  
  		var platformElement = doc.find('./platform/[@name="' + target + '"]');
  
  		if (platformElement) {
  			var icons = platformElement.findall('./icon');
  
  			for (var i=0; i<icons.length; i++) {
  				platformElement.remove(icons[i]);
  			}
  		} else {
  			platformElement = new et.Element('platform');
  			platformElement.attrib.name = target;
  
  			doc.getroot().append(platformElement);
  		}
  
  		// Add all the icons
  		for(var i=0; i<platforms[target].icons.length; i++) {
  			var iconElement = new et.Element('icon');
  			iconElement.attrib = {
  				...platforms[target].icons[i].attributes,
  				src: 'res/' + target + '/' + platforms[target].icons[i].file
  			};
  
  			platformElement.append(iconElement);
  		}
  
  		fs.writeFileSync(path.join(__dirname, '../../config.xml'), doc.write({indent: 4}), 'utf-8');
  	} catch (e) {
  		console.error('Could not load config.xml');
  		throw e;
  	}
  }
docs: This method will update the config.xml file for the target platform. It will
  add the icon tags to the config file.