Added and fixed docstrings

Tags: #docs

src/main/java/seng302/App.java

@@ -40,6 +40,7 @@ public class App {
             return null;
         }
 
+        // Add boats to the race
         for (int i = 0; i < numberOfBoats; i++) {
             race.addBoat(new Boat(boatNames.get(i), (Double) (teams.get(i).get("velocity"))));
         }

src/main/java/seng302/Race.java

@@ -12,6 +12,9 @@ public class Race {
     private long startTime = 0;
     private double timeScale = 1;
 
+    /**
+    * Race class containing the boats and legs in the race
+    */
     public Race() {
         this.boats = new ArrayList<Boat>();
         this.legs = new ArrayList<Leg>();