Connecting to cluster example (#2298)

* Connecting to cluster example

* Connecting to cluster example

* Making changes according to review

* Adding example to Readme.md in alphabetical order

* Fixed order of scripts so they are alphabetic.

Co-authored-by: Simon Prickett <simon@redis.com>

Closes #2281.

examples/connect-to-cluster.js

@@ -0,0 +1,33 @@
+// This is an example script to connect to a running cluster.
+// After connecting to the cluster the code sets and get a value.
+
+// To setup this cluster you can follow the guide here: 
+// https://redis.io/docs/manual/scaling/
+// In this guide the ports which are being used are 7000 - 7005
+
+
+import { createCluster } from 'redis';
+
+const cluster = createCluster({
+    rootNodes : [
+        {
+            url : 'redis://127.0.0.1:7001'
+        },
+        {
+            url : 'redis://127.0.0.1:7002'
+        },
+        {
+            url : 'redis://127.0.0.1:7003'
+        }
+    ]
+});
+
+cluster.on('error', (err) => console.log('Redis Client Error', err));
+
+await cluster.connect();
+
+await cluster.set('hello', 'cluster');
+const value = await cluster.get('hello');
+console.log(value);
+
+await cluster.quit();