Update definition for "express-validator": add "isMACAddress" function.

express-validator/express-validator.d.ts

@@ -66,12 +66,14 @@ declare module ExpressValidator {
 		 * Accepts http, https, ftp
 		 */
 		isUrl(): Validator;
+
 		/**
 		 * Combines isIPv4 and isIPv6
 		 */
 		isIP(): Validator;
 		isIPv4(): Validator;
 		isIPv6(): Validator;
+		isMACAddress(): Validator;
 		isAlpha(): Validator;
 		isAlphanumeric(): Validator;
 		isNumeric(): Validator;