add 3

3.zalando/README.md

@@ -0,0 +1,18 @@
+# Zalando
+
+1. install operator
+
+```shell
+helm install zalando -n zalando --create-namespace charts/postgres-operator
+```
+
+2. install cluster
+
+```shell
+kubectl apply -f 3.zalando/baseCluster.yaml
+```
+
+
+## больше
+
+https://github.com/zalando/postgres-operator/blob/master/docs/administrator.md