remove a duplicate cluster docs piece, versio 4.2.1

README.md

@@ -40,28 +40,6 @@ The order in which the routes are registered is important, since
 You can use this to your advantage to bypass some of the routes.
 See the example below.
 
-## Usage with Node Cluster
-``` javascript
-if (cluster.isMaster) {
-    const numCPUs = Math.max(2, os.cpus().length);
-    const workers: cluster.Worker[] = [];
-    for (let i=1; i < numCPUs; i++) {
-        const worker = forkWorker();
-        workers.push(worker);
-    }
-    const metricsApp = express();
-    metricsApp.use('/cluster_metrics', promBundle.clusterMetrics());
-    metricsApp.listen(9999);
-    console.log('metrics listening on 9999'); // call localhost:9999/cluster_metrics for aggregated metrics
-} else {
-    const app = express();
-    app.use(promBundle({includeMethod: true});
-    app.use('/api', require('./api'));
-    app.listen(3000);
-}
-```
-The code the master process runs will expose an API with a single endpoint `/cluster_metrics` which returns an aggregate of all metrics from all the workers.
-
 ## Options
 
 Which labels to include in `http_request_duration_seconds` metric:

package.json

@@ -1,6 +1,6 @@
 {
   "name": "express-prom-bundle",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "description": "express middleware with popular prometheus metrics in one bundle",
   "main": "src/index.js",
   "keywords": [