update example categories in the browser

android/todo.txt

@@ -1,5 +1,6 @@
 0210 android
 X lots of example updates from Andres
+X update example categories in the browser
 
 _ PMotionEvent is being used internal to PApplet, need to re-wrap
 _   should be able to fire MotionEvents

app/src/processing/mode/android/AndroidMode.java

@@ -68,8 +68,8 @@ public class AndroidMode extends JavaMode {
     return new File[] {
       new File(examplesFolder, "Basics"),
       new File(examplesFolder, "Topics"),
-      new File(examplesFolder, "Sensors"),
-      new File(examplesFolder, "OpenGL")
+      new File(examplesFolder, "Demos"),
+      new File(examplesFolder, "Sensors")
     };
   }