docs(object-store): Include example settings for object storage env v…

…ariables

This includes object storage variables in the example env settings.

.env.example

@@ -3,6 +3,13 @@ DJANGO_SECRET_KEY=thisisnotasecretkey
 DJANGO_ALLOWED_HOSTS='localhost,"",127.0.0.1,0.0.0.0'
 DJANGO_CSRF_TRUSTED_ORIGINS='http://localhost'
 
+# Object Store
+OBJ_STORAGE=False # set to True to turn on, fill in the following variables
+OBJ_STORAGE_ACCESS_KEY_ID=winterthur
+OBJ_STORAGE_SECRET_ACCESS_KEY=winterthur
+OBJ_STORAGE_BUCKET_NAME=winterthur
+OBJ_STORAGE_ENDPOINT_URL=minio
+
 # Database 
 DB_NAME=winterthur
 DB_USER=winterthur