Update README.md

README.md

@@ -1,2 +1,43 @@
-How to use
+Getting started
 ----------
+First, you have to create a new class where you will define all your rules. Let's start with this:
+
+ require_once "SimpleRoles.php";
+
+ class Ability extends SimpleRoles {
+
+  function __construct($user) {
+  parent::__construct();
+
+  // You should define here your rules
+  }
+
+ }
+
+We place our rules inside the `__construct` function.
+
+ function __construct($user) {
+  parent::__construct();
+
+  // We put the current user roles in $user_roles.
+  // Please note that you can use whatever method you
+  // prefer for checking role membership.
+  $user_roles = array();
+  if($user != null)
+  $user_roles = $user->getRoles();
+
+  if(in_array('admin', $user_roles)) {
+  $this->can('read_article');
+  $this->can('write_article');
+  $this->can('delete_article');
+  }
+
+  if(in_array('moderator', $user_roles)) {
+  $this->can('read_article');
+  $this->can('write_article');
+  }
+
+  if(in_array('guest', $user_roles)) {
+  $this->cannot('all');
+  }
+ }