Naming fixes for documentation and method names

Author: JasperGeurtz

src/main/java/bwapi/DamageType.java

@@ -1,9 +1,7 @@
 package bwapi;
 
 /**
- * Namespace containing damage types.
- *
- * @see DamageType
+ * Enum containing damage types.
  *
  * [View on Liquipedia](http://wiki.teamliquid.net/starcraft/Damage_Type)<br>
  * [View on Starcraft Campendium (Official Website)](http://classic.battle.net/scc/gs/damage.shtml)<br>

src/main/java/bwapi/DefaultBWListener.java

@@ -1,20 +1,24 @@
 package bwapi;
 
+/**
+ * Convenience class that extends all methods in {@link BWEventListener}.
+ * Not all of the methods need an implementation.
+ */
 public class DefaultBWListener implements BWEventListener {
 
     public void onStart() {
     }
 
-    public void onEnd(final boolean b) {
+    public void onEnd(final boolean isWinner) {
     }
 
     public void onFrame() {
     }
 
-    public void onSendText(final String s) {
+    public void onSendText(final String text) {
     }
 
-    public void onReceiveText(final Player player, final String s) {
+    public void onReceiveText(final Player player, final String text) {
     }
 
     public void onPlayerLeft(final Player player) {
@@ -47,7 +51,7 @@ public void onUnitMorph(final Unit unit) {
     public void onUnitRenegade(final Unit unit) {
     }
 
-    public void onSaveGame(final String s) {
+    public void onSaveGame(final String text) {
     }
 
     public void onUnitComplete(final Unit unit) {

src/main/java/bwapi/EventType.java

@@ -3,7 +3,7 @@
 import java.util.Arrays;
 
 /**
- * Contains a list of event types supported by BWAPI.
+ * Enum of event types supported by BWAPI.
  */
 public enum EventType {
     MatchStart(0),