Fix SimulatorSaver

BauSystem_Main/src/de/steamwar/bausystem/features/simulator/storage/SimulatorSaver.java

@@ -32,6 +32,10 @@ import java.io.IOException;
 public class SimulatorSaver {
 
     public void saveSimulator(File directory, Simulator simulator) {
+        if (!directory.exists()) {
+            directory.mkdirs();
+        }
+
         YAPIONObject simulatorObject = new YAPIONObject();
         simulatorObject.add("material", simulator.getMaterial().name());
         simulatorObject.add("autoTrace", simulator.isAutoTrace());