also added display_event

bind/example.py

@@ -1,5 +1,5 @@
 import multiprocessing
-from G4Calo import GeometryDescriptor, run_batch
+from G4Calo import GeometryDescriptor, run_batch, display_event
 import sys
 
 if __name__ == '__main__':
@@ -19,3 +19,5 @@ if __name__ == '__main__':
         gd.addLayer(1.,"G4_POLYSTYRENE",True,1)
     
     df = run_batch(gd,10, 'gamma', 1)
+
+    display_event(gd,"gamma", 2)