rename planetstack module to xos
diff --git a/planetstack/core/models/site.py b/planetstack/core/models/site.py
index 2a41352..d1f04dd 100644
--- a/planetstack/core/models/site.py
+++ b/planetstack/core/models/site.py
@@ -6,7 +6,7 @@
 from django.contrib.contenttypes import generic
 from geoposition.fields import GeopositionField
 from core.acl import AccessControlList
-from planetstack.config import Config
+from xos.config import Config
 
 config = Config()