add the generic handler and the request classes

ChainOfResponsibilities/Request.php

@@ -0,0 +1,23 @@
+<?php
+
+/*
+ * DesignPatternPHP
+ */
+
+namespace DesignPatterns\ChainOfResponsibilities;
+
+/**
+ * Request is a request which goes throught the chain of responsibilities.
+ * 
+ * About the request : Sometimes, you don't need an object, just an integer or
+ * an array. But in this case of a full example, I've made a class to illustrate 
+ * this important idea in the CoR (Chain of Responsibilities). In real world,
+ * I recommand to always use a class, even a \stdClass if you want, it proves
+ * to be more adaptative because a single handler doesn't know much about the
+ * outside world and it is more difficult if, one day, you want add some 
+ * criterion in a decision process. 
+ */
+class Request
+{
+    
+}