enable *args and **kwargs notation (closes #190)
diff --git a/example/example5.cpp b/example/example5.cpp
index 4ba6a34..11d37d0 100644
--- a/example/example5.cpp
+++ b/example/example5.cpp
@@ -43,12 +43,12 @@
 }
 
 bool test_callback1(py::object func) {
-    func.call();
+    func();
     return false;
 }
 
 int test_callback2(py::object func) {
-    py::object result = func.call("Hello", 'x', true, 5);
+    py::object result = func("Hello", 'x', true, 5);
     return result.cast<int>();
 }