added a testing-only google maps API key, required by django-geoposition 0.2.3 or later

Change-Id: If66ec6e8a680d247ae5b03c0f6af44f70797436e
diff --git a/xos/xos/settings.py b/xos/xos/settings.py
index f654b1d..fd04812 100644
--- a/xos/xos/settings.py
+++ b/xos/xos/settings.py
@@ -267,3 +267,7 @@
 
 # prevents warnings on django 1.7
 TEST_RUNNER = 'django.test.runner.DiscoverRunner'
+
+# API key for Google Maps, created by zdw on 2016-06-29. Testing only, not for production
+GEOPOSITION_GOOGLE_MAPS_API_KEY = 'AIzaSyBWAHP9mvLqWLRkVqK8o5wMskaIe9w7DaM'
+