update readme.md

premaseem · premaseem · commit bfe7ccd5e04b · 2018-08-07T16:35:35.000-05:00
diff --git a/README.md b/README.md
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-# DesignPatternsJava9
-This repo consists Gang of Four Design patterns code on Java 9. Each branch in the repository has code of 1 design pattern. Switch repository to try out different design patterns.
+# What is Command Design Pattern 
+Command encapsulate all information needed to perform an action. It allows the requester of a particular action to be decoupled from the object that performs the action.
+
+## Diagram
+![Diagram](https://github.com/premaseem/DesignPatternsJava9/blob/command-pattern/diagrams/template-method-Pattern-class-diagram.jpeg "Diagram")
+
+![Diagram](https://github.com/premaseem/DesignPatternsJava9/blob/command-pattern/diagrams/Template-method-Design-Pattern-generic.jpeg "Diagram")
+
+![Diagram](https://github.com/premaseem/DesignPatternsJava9/blob/command-pattern/diagrams/template-method-sequence.png "Diagram")
+
+### When to use Command Design Pattern 
+The invoker should be decoupled from the object handling the invocation.
+
+### Learn Design Patterns with Java by Aseem Jain
+This repository contains working project code used in video Course by Packt Publication with title "Learn Design Patterns with Java " authored by "Aseem Jain".
+
+### Course link: 
+https://www.packtpub.com/application-development/learn-design-patterns-java-9-video
+
+### ![ http://in.linkedin.com/in/premaseem](https://github.com/premaseem/DesignPatternsJava9/blob/master/linkedin.png "http://in.linkedin.com/in/premaseem") Profile:  http://in.linkedin.com/in/premaseem
+
+### Authors blog on design patterns:
+https://premaseem.wordpress.com/category/computers/design-patterns/
+
+### Software Design pattern community face book page:
+https://www.facebook.com/DesignPatternGuru/
+
+### Note: 
+* This code base will work on Java 9 and above versions. 
+* `diagrams` folders carry UML diagrams.
+* `pattern` folder has code of primary example. 
+* `patternBonus` folder has code of secondary or bonus example.
