Update maps engine sample.

Reviewed in https://codereview.appspot.com/83080044/
diff --git a/samples/maps_engine/maps_engine.py b/samples/maps_engine/maps_engine.py
index 978145f..4eecb82 100644
--- a/samples/maps_engine/maps_engine.py
+++ b/samples/maps_engine/maps_engine.py
Binary files differ
diff --git a/samples/maps_engine/polygons.prj b/samples/maps_engine/polygons.prj
index 8f73f48..152e8d3 100644
--- a/samples/maps_engine/polygons.prj
+++ b/samples/maps_engine/polygons.prj
Binary files differ