Impelements and integrates DisplayFactory. Further does some refactoring

FlippR-Driver/src/output/factories/DisplayFactory.h

@@ -9,6 +9,7 @@
 #define FLIPPR_DRIVER_DISPLAYFACTORY_H
 
 #include "ItemFactory.h"
+#include "output/DisplayBoardPinController.h"
 
 namespace flippR_driver
 {
@@ -17,10 +18,15 @@ namespace output
 
 class DisplayFactory : ItemFactory
 {
+public:
   explicit DisplayFactory(nlohmann::json & object, std::shared_ptr<DisplayBoardPinController> pin_controller);
   std::map<std::string, std::shared_ptr<items::Item>> getItemMap() override;
-public:
 
+private:
+  void create_pin_map();
+
+private:
+  std::map<std::string, uint8_t> pin_map;
 };
 
 }