add file endline to Interface.h

Author: CosminPerRam

include/Interface.h

@@ -35,4 +35,4 @@ class Interface
 	static void draw(sf::RenderWindow& window);
 	static void pollEvent(sf::RenderWindow& window, sf::Event& theEvent);
 	static void update(sf::RenderWindow& window, sf::Time diffTime);
-};
+};