Added WindCommand and multiple command execution to RaceLogic

- Dispatch commands with CompositeCommand
- Single WindCommand handles upwind and downwind logic
- Changed key bindings as Mac lacks PgUp PgDn
- ControllerServer is observable, RaceLogic updates CompositeCommand as observer

racevisionGame/src/test/java/mock/model/commandFactory/WindCommandTest.java

@@ -0,0 +1,31 @@
+package mock.model.commandFactory;
+
+import mock.model.MockRace;
+import network.Messages.Enums.BoatActionEnum;
+import org.junit.Before;
+import org.junit.Test;
+import shared.model.Boat;
+import shared.model.Race;
+import visualiser.model.VisualiserRace;
+
+import static org.testng.Assert.*;
+
+/**
+ * Created by connortaylorbrown on 4/08/17.
+ */
+public class WindCommandTest {
+    private Race race;
+    private Boat boat;
+    private Command upwind;
+    private Command downwind;
+
+    @Before
+    public void setUp() {
+        boat = new Boat(0, "Bob", "NZ");
+    }
+
+    @Test
+    public void upwindCommandDecreasesAngle() {
+
+    }
+}