Add Author to README

README.md

@@ -127,8 +127,16 @@ David Maul:
 - Level.cpp/hpp
 - main.cpp
 
-
-
+Frederik Keens:
+- main.cpp
+- Player.cpp/hpp
+- Level.cpp/hpp
+- Building.cpp/hpp
+- Unit.cpp/hpp
+- Tile.cpp/hpp
+- Spritesheet.cpp/hpp
+- Scene.hpp
+- Engine.cpp/hpp