added factory method sample

factory-method/src/main/java/com/iluwatar/ElfWeapon.java

@@ -0,0 +1,16 @@
+package com.iluwatar;
+
+public class ElfWeapon implements Weapon {
+
+	private WeaponType weaponType;
+
+	public ElfWeapon(WeaponType weaponType) {
+		this.weaponType = weaponType;
+	}
+
+	@Override
+	public String toString() {
+		return "Elven " + weaponType;
+	}
+	
+}