Added overload of Task::StartNew() to support void-returning member functions.

Source/Engine/Threading/Task.h

@@ -248,6 +248,19 @@ public:
     /// <returns>Task</returns>
     static Task* StartNew(Function<void()>::Signature action, Object* target = nullptr);
 
+    /// <summary>
+    /// Starts the new task.
+    /// </summary>
+    /// <param name="callee">The callee object.</param>
+    /// <returns>Task</returns>
+    template<class T, void(T::* Method)()>
+    static Task* StartNew(T* callee)
+    {
+        Function<void()> action;
+        action.Bind<T, Method>(callee);
+        return StartNew(action, dynamic_cast<Object*>(callee));
+    }
+
     /// <summary>
     /// Starts the new task.
     /// </summary>