replace wrong code with link

examples/hazelcast/README.md

@@ -201,134 +201,6 @@ kubectl resize rc hazelcast --replicas=4
 
 ### Hazelcast Discovery Source
 
-```java
-package com.github.pires.hazelcast;
-
-import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
-import com.fasterxml.jackson.databind.ObjectMapper;
-import com.hazelcast.config.Config;
-import com.hazelcast.config.GroupConfig;
-import com.hazelcast.config.JoinConfig;
-import com.hazelcast.config.MulticastConfig;
-import com.hazelcast.config.NetworkConfig;
-import com.hazelcast.config.SSLConfig;
-import com.hazelcast.config.TcpIpConfig;
-import com.hazelcast.core.Hazelcast;
-import java.io.IOException;
-import java.net.URL;
-import java.util.List;
-import java.util.UUID;
-import java.util.concurrent.CopyOnWriteArrayList;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.boot.CommandLineRunner;
-import org.springframework.stereotype.Controller;
-
-/**
- * Read from Kubernetes API all Hazelcast service bound pods, get their IP and connect to them.
- */
-@Controller
-public class HazelcastDiscoveryController implements CommandLineRunner {
-
-  private static final Logger log = LoggerFactory.getLogger(
-      HazelcastDiscoveryController.class);
-
-  @JsonIgnoreProperties(ignoreUnknown = true)
-  static class Address {
-
-    public String IP;
-  }
-
-  @JsonIgnoreProperties(ignoreUnknown = true)
-  static class Subset {
-
-    public List<Address> addresses;
-  }
-
-  @JsonIgnoreProperties(ignoreUnknown = true)
-  static class Endpoints {
-
-    public List<Subset> subsets;
-  }
-
-  private static String getEnvOrDefault(String var, String def) {
-    final String val = System.getenv(var);
-    return (val == null || val.isEmpty())
-        ? def
-        : val;
-  }
-
-  @Override
-  public void run(String... args) {
-    final String hostName = getEnvOrDefault("KUBERNETES_RO_SERVICE_HOST",
-        "localhost");
-    final String hostPort = getEnvOrDefault("KUBERNETES_RO_SERVICE_PORT",
-        "8080");
-    String serviceName = getEnvOrDefault("HAZELCAST_SERVICE", "hazelcast");
-    String path = "/api/v1beta3/namespaces/default/endpoints/";
-    final String host = "http://" + hostName + ":" + hostPort;
-    log.info("Asking k8s registry at {}..", host);
-
-    final List<String> hazelcastEndpoints = new CopyOnWriteArrayList<>();
-
-    try {
-      URL url = new URL(host + path + serviceName);
-      ObjectMapper mapper = new ObjectMapper();
-      Endpoints endpoints = mapper.readValue(url, Endpoints.class);
-      if (endpoints != null) {
-        if (endpoints.subsets != null && !endpoints.subsets.isEmpty()) {
-          endpoints.subsets.parallelStream().forEach(subset -> {
-            subset.addresses.parallelStream().forEach(
-                addr -> hazelcastEndpoints.add(addr.IP));
-          });
-        }
-      }
-    } catch (IOException ex) {
-      log.warn("Request to Kubernetes API failed", ex);
-    }
-
-    log.info("Found {} pods running Hazelcast.", hazelcastEndpoints.size());
-
-    runHazelcast(hazelcastEndpoints);
-  }
-
-  private void runHazelcast(final List<String> nodes) {
-    // configure Hazelcast instance
-    final Config cfg = new Config();
-    cfg.setInstanceName(UUID.randomUUID().toString());
-    // group configuration
-    final String HC_GROUP_NAME = getEnvOrDefault("HC_GROUP_NAME", "someGroup");
-    final String HC_GROUP_PASSWORD = getEnvOrDefault("HC_GROUP_PASSWORD",
-        "someSecret");
-    final int HC_PORT = Integer.parseInt(getEnvOrDefault("HC_PORT", "5701"));
-    cfg.setGroupConfig(new GroupConfig(HC_GROUP_NAME, HC_GROUP_PASSWORD));
-    // network configuration initialization
-    final NetworkConfig netCfg = new NetworkConfig();
-    netCfg.setPortAutoIncrement(false);
-    netCfg.setPort(HC_PORT);
-    // multicast
-    final MulticastConfig mcCfg = new MulticastConfig();
-    mcCfg.setEnabled(false);
-    // tcp
-    final TcpIpConfig tcpCfg = new TcpIpConfig();
-    nodes.parallelStream().forEach(tcpCfg::addMember);
-    tcpCfg.setEnabled(true);
-    // network join configuration
-    final JoinConfig joinCfg = new JoinConfig();
-    joinCfg.setMulticastConfig(mcCfg);
-    joinCfg.setTcpIpConfig(tcpCfg);
-    netCfg.setJoin(joinCfg);
-    // ssl
-    netCfg.setSSLConfig(new SSLConfig().setEnabled(false));
-    // set it all
-    cfg.setNetworkConfig(netCfg);
-    // run
-    Hazelcast.newHazelcastInstance(cfg);
-  }
-
-}
-
-```
-
+See [here](https://github.com/pires/hazelcast-kubernetes-bootstrapper/blob/master/src/main/java/com/github/pires/hazelcast/HazelcastDiscoveryController.java)
 
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