Add an attach example. Fix the attach code. (#116)

examples/attach/Attach.cs

@@ -0,0 +1,40 @@
+using System;
+using System.Threading.Tasks;
+using k8s;
+using k8s.Models;
+using Microsoft.Rest;
+
+namespace attach
+{
+    internal class Attach
+    {
+        private static async Task Main(string[] args)
+        {
+            ServiceClientTracing.IsEnabled = true;
+
+            var config = KubernetesClientConfiguration.BuildConfigFromConfigFile();
+            IKubernetes client = new Kubernetes(config);
+            Console.WriteLine("Starting Request!");
+
+            var list = client.ListNamespacedPod("default");
+            var pod = list.Items[0];
+            await AttachToPod(client, pod);
+        }
+
+        private async static Task AttachToPod(IKubernetes client, V1Pod pod) {
+            var webSocket = await client.WebSocketNamespacedPodAttachAsync(pod.Metadata.Name, "default", pod.Spec.Containers[0].Name);
+            
+            var demux = new StreamDemuxer(webSocket);
+            demux.Start();
+
+            var buff = new byte[4096];
+            var stream = demux.GetStream(1, 1);
+            while (true)
+            {
+                var read = stream.Read(buff, 0, 4096);
+                var str = System.Text.Encoding.Default.GetString(buff);
+                Console.WriteLine(str);
+            }
+        }
+    }
+}