Improve Composite Javadoc

composite/src/main/java/com/iluwatar/composite/App.java

@@ -1,10 +1,14 @@
 package com.iluwatar.composite;
 
 /**
- * 
- * With Composite we can treat tree hierarchies of objects with uniform
- * interface ({@link LetterComposite}). In this example we have sentences composed of
- * words composed of letters.
+ * The Composite pattern is a partitioning design pattern. The Composite pattern 
+ * describes that a group of objects is to be treated in the same way as a single 
+ * instance of an object. The intent of a composite is to "compose" objects into 
+ * tree structures to represent part-whole hierarchies. Implementing the Composite 
+ * pattern lets clients treat individual objects and compositions uniformly.
+ * <p>
+ * In this example we have sentences composed of words composed of letters. All of
+ * the objects can be treated through the same interface ({@link LetterComposite}).
  * 
  */
 public class App {