inline filter configuration described in the readme

Author: jrencz

README.md

@@ -16,7 +16,8 @@ A module providing an [AngularJS](http://angularjs.org/) filter which can be use
 
 ## How it works?
 
-1. It's is configurable: you should configure which properties of your nodes should checked.
+1. It's is configurable: 
+  - you may provide default properties of your nodes that should matched against provided pattern:
 
 ```
 angular.module('myApp')
@@ -25,6 +26,12 @@ angular.module('myApp')
   });
 ```
 
+  - or you may pass property list as an optional 3rd argument:
+
+```
+$filter('uiTreeFilter')(nodeObject, pattern, ['title', 'description', 'username'])
+```
+
 2. It matches the whole path
 If a sub-node matches all its ancestors up to the tree root match as well: