Created a setWind(bearing, knots) in Race, which updates the Wind with new values.

MockRace now uses Wind.
VisualiserRace now uses Wind.
#story[1093]

racevisionGame/src/main/java/shared/model/Race.java

@@ -166,8 +166,7 @@ public abstract class Race implements Runnable {
         this.raceType = raceDataSource.getRaceType();
 
         //Wind.
-        Wind wind = new Wind(Bearing.fromDegrees(0), 0);
-        this.raceWind.setValue(wind);
+        this.setWind(Bearing.fromDegrees(0), 0);
 
     }
 
@@ -248,6 +247,18 @@ public abstract class Race implements Runnable {
         return regattaName;
     }
 
+
+    /**
+     * Updates the race to have a specified wind bearing and speed.
+     * @param windBearing New wind bearing.
+     * @param windSpeedKnots New wind speed, in knots.
+     */
+    protected void setWind(Bearing windBearing, double windSpeedKnots) {
+        Wind wind = new Wind(windBearing, windSpeedKnots);
+        this.raceWind.setValue(wind);
+    }
+
+
     /**
      * Returns the wind bearing.
      * @return The wind bearing.