mongoid.yml in scram-0.1.3

- old
+ new

@@ -1,6 +1,10 @@
 test:
   clients:
     default:
       database: scram_db
       hosts:
-        - localhost:27017
+        - 127.0.0.1:27017
+      options:
+        read:
+          mode: :primary
+        max_pool_size: 1