Added example to main function

typefactory/main.cpp

@@ -1,8 +1,42 @@
 #include <iostream>
+#include "typefactory.h"
+#include <string>
 
 using namespace std;
 
 int main() {
   cout << "Hello World!" << endl;
+
+  struct Base {
+    virtual ~Base() = default;
+    virtual int get() = 0;
+  };
+
+  struct Derived1 : Base {
+    explicit Derived1 (int start) : m_start (start) {}
+    int get() override {
+      return m_start + 1;
+    }
+    int m_start = 0;
+  };
+
+  struct Derived2 : Base {
+    explicit Derived2 (int start) : m_start (start) {}
+    int get() override {
+      return m_start + 2;
+    }
+    int m_start = 0;
+  };
+
+  TypeFactory<std::string, Base, int> factory;
+  factory.registerType<Derived1> ("one");
+  factory.registerType<Derived2> ("two");
+
+  auto a = factory.create ("one", 10);
+  auto b = factory.creator ("two") (10); // advanced API: get creator function
+
+  (void)a->get();
+  (void)b->get();
+
   return 0;
 }