Changed default window size of test app.

tests/testapp.py

@@ -254,7 +254,7 @@ if __name__ == '__main__':
 
     # Create a window with a Cairo context in it and a multi-touch area
     # syncronized with it
-    create_context_window(640, 460, on_show)
+    create_context_window(800, 600, on_show)
 
     # Run multi-touch gesture server in separate thread
     driver = mt.create_driver(root)