Javadoc improvements.

src/main/java/com/threerings/getdown/launcher/GetdownApp.java

@@ -45,7 +45,7 @@ import com.samskivert.util.StringUtil;
 import static com.threerings.getdown.Log.log;
 
 /**
- * Does something extraordinary.
+ * The main application entry point for Getdown.
  */
 public class GetdownApp
 {

src/main/java/com/threerings/getdown/launcher/ImageLoader.java

@@ -26,8 +26,12 @@ package com.threerings.getdown.launcher;
 
 import java.awt.Image;
 
+/**
+ * Abstracts away the process of loading an image so that it can be done differently in the app and
+ * applet.
+ */
 public interface ImageLoader
 {
-
+    /** Loads and returns the image with the supplied path. */
     public Image loadImage (String path);
 }