Added example desctiption.

typefactory/main.cpp

@@ -5,7 +5,7 @@
 using namespace std;
 
 int main() {
-  cout << "Hello World!" << endl;
+  cout << "Type factory simple example" << endl;
 
   struct Base {
     virtual ~Base() = default;
@@ -35,8 +35,8 @@ int main() {
   auto a = factory.create ("one", 10);
   auto b = factory.creator ("two") (10); // advanced API: get creator function
 
-  (void)a->get();
-  (void)b->get();
+  std::cout << a->get() << std::endl;
+  std::cout << b->get() << std::endl;
 
   return 0;
 }