Implemented some basic UI

src/GameState.h

@@ -10,10 +10,10 @@
 
 #include <model/Level.h>
 #include <model/Player.h>
-#include <model/GameConfig.h>
 #include <graphics/SdlRenderer.h>
 #include <graphics/GameRenderer.h>
 #include <graphics/GuiRenderer.h>
+#include <model/Configuration.h>
 #include <resources/ResourceManager.h>
 
 #include <memory>
@@ -51,7 +51,7 @@ namespace farmlands {
 		GuiState gui;
 
 		// Settings
-		model::GameConfig gameConfig;
+		model::Configuration config;
 
 		// Current game
 		ViewportState viewport;