added template method sample

template-method/src/main/java/com/iluwatar/App.java

@@ -0,0 +1,12 @@
+package com.iluwatar;
+
+public class App 
+{
+    public static void main( String[] args )
+    {
+    	HalflingThief thief = new HalflingThief(new HitAndRunMethod());
+    	thief.steal();
+    	thief.changeMethod(new SubtleMethod());
+    	thief.steal();
+    }
+}