update readme

README.md

@@ -14,5 +14,9 @@ $task->addTag('next'); // todo :D
 
 $tm->save($task);
 
-$tasks = $tm->filter('project:hobby');
+$tasks = $tm->filter('project:hobby'); // one task
+
+$tm->done($task);
+
+$tasks = $tm->filter('project:hobby'); // empty
 ```

src/TaskManager.php

@@ -12,7 +12,7 @@ use Symfony\Component\Process\ProcessBuilder;
 class TaskManager
 {
     /**
-     * @var array
+     * @var Taskwarrior
      */
     private $taskwarrior;
 
@@ -29,6 +29,14 @@ class TaskManager
         $this->taskwarrior = $taskwarrior;
     }
 
+    /**
+     * @return Taskwarrior
+     */
+    public function getTaskwarrior()
+    {
+        return $this->taskwarrior;
+    }
+
     /**
      * @param Task $task
      */