Added Parent constructor and creator

lib/Parent.js

@@ -3,16 +3,23 @@
 const User = require('./User');
 
 class Parent extends User {
-	constructor() {
-
+	constructor(id) {
+		super('parent', id);
 	}
 
 	get children() {
 
 	}
 
-	static createParent() {
-
+	static async createParent(fname, oname, lname, email, password) {
+		return await super.createUser(
+			'parent',
+			fname,
+			oname,
+			lname,
+			email,
+			password
+		);
 	}
 }