example: Wait a bit before ending

feedbackd terminates feedback when clients disconnect from DBus so
we need to wait a bit before quitting as otherwise no feedback will
be played.

Closes: #65

examples/example.py

@@ -3,9 +3,13 @@
 # export GI_TYPELIB_PATH=/usr/local/lib/x86_64-linux-gnu/girepository-1.0/
 
 import gi
+import time
 gi.require_version('Lfb', '0.0')
 from gi.repository import Lfb
 
 Lfb.init('org.sigxcpu.lfbexample')
 event = Lfb.Event.new('phone-incoming-call')
 event.trigger_feedback()
+# feedbackd terminates feedback from clients that disconnect from DBus to avoid
+# feedback not being stopped. So wait a bit before quitting:
+time.sleep(3)