javadocs: document the BudgetNumbers class

git-svn-id: https://micropolis.googlecode.com/svn/trunk/micropolis-java@565 d9718cc8-9f43-0410-858b-315f434eb58c

src/micropolisj/engine/BudgetNumbers.java

@@ -8,6 +8,10 @@
 
 package micropolisj.engine;
 
+/**
+ * The information generated by the generateBudget function.
+ * @see micropolisj.engine.Micropolis#generateBudget
+ */
 public class BudgetNumbers
 {
 	public int taxRate;

src/micropolisj/engine/Micropolis.java

@@ -1753,6 +1753,9 @@ public class Micropolis
 		policeFundEscrow = 0;
 	}
 
+	/**
+	 * Calculate the current budget numbers.
+	 */
 	public BudgetNumbers generateBudget()
 	{
 		BudgetNumbers b = new BudgetNumbers();