Added Readme.md file

README.md

@@ -0,0 +1,38 @@
+# Sabalim-Action-Wrapper  
+
+Action Wrapper Library for Before/After Specific action handling, this library provides the abstraction layer for other libraries specially for Sabalim-Elastic-Apm-PHP-Agent.  
+
+### HandlerInterface  
+Interface provides two functions which whould run before and after any specific action  
+
+    interface HandlerInterface{
+        public function handleBefore($parent, string $actionName, array $actionData = []); 
+        public function handleAfter($parent, string $actionName, array $actionData = []);
+    }
+`$parent` is your main object which it's action(s) need to be wrapped for example you can pass the `redis` object
+`$actionName` is the context of the action you are trying to wrap 
+`$actionData` is the extra data you whould like to pass to the wrapper
+
+### HandlerAbstract
+HandlerAbstract class implements the HandlerInterface and does claculate the action event duration by default but you can pass the `start` and `end` microtime to override the default implemented code
+
+It has the built-in DataStore to save the extra parameters passed in `handleBefore` to be used later in `handlerAfter` method.
+
+Your custom handlers may extend this class.
+
+    class myCustomHandler extends HandlerAbstract
+    {
+     	private $your_custom_private;
+     	public $your_custom_public;
+
+	    public function handleBefore($request, string $actionName, array $actionData = [])  
+	    {  
+		      parent::handleBefore($request, $actionName, $actionData);  
+		      // Your code ...
+	    }
+		public function handleAfter($request, string $actionName, array $actionData = [])  
+		{  
+			      parent::handleAfter($request, $actionName, $actionData);  
+			      // Your code ...
+		}
+    }