update

rollout/prod-history.yaml

@@ -4,6 +4,7 @@ rollout:
     app-business: ['19-12-02 20:49:02:master-1591-c5ee84ca4f-yangpeifeng']
     app-content: ['19-12-04 17:22:32:master-421-873fd1f197-qianqinbo']
     app-forum: ['19-12-02 20:48:46:master-66-d709fdb14e-yangpeifeng']
+    app-referral: ['19-12-04 21:33:44:master-54-fca9966189-yedahong']
     app-schoolwork: ['19-12-04 17:21:11:master-207-b924771736-qianqinbo']
     app-tam: ['19-12-04 10:25:29:master-629-083de4da0e-zhangzhong', '19-12-03 21:04:33:master-621-a1662af1db-linzhensuo',
       '19-12-03 16:29:32:master-619-ae030fc15d-zhangzhong']