Add User story example on state pattern

src/StatePattern/ScrumExample/UserStory.cs

@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace StatePattern.ScrumExample
+{
+    public class UserStoryMotivational
+    {
+        public String Name { get; set; }
+        public UserStoryState State { get; set; }
+    }
+}