add waitForDebugger() call in wallpaper's main service

Author: codeanticode

studio/apps/wallpaper/src/main/java/wallpaper/MainService.java

@@ -6,6 +6,8 @@
 public class MainService extends PWallpaper {  
   @Override
   public PApplet createSketch() {
+    // Uncomment the following line when debugging:
+//    android.os.Debug.waitForDebugger();
     PApplet sketch = new Sketch();    
     return sketch;
   }