README: remove stray comma in example and add go language identifiers

README.md

@@ -11,27 +11,29 @@ environments.
 
 Using the library is very simple, here is an example of publishing a service entry:
 
-    // Setup our service export
-    host, _ := os.Hostname()
-    info := []string{"My awesome service"},
-    service, _ := NewMDNSService(host, "_foobar._tcp", "", "", 8000, nil, info)
-
-    // Create the mDNS server, defer shutdown
-    server, _ := mdns.NewServer(&mdns.Config{Zone: service})
-    defer server.Shutdown()
+```go
+// Setup our service export
+host, _ := os.Hostname()
+info := []string{"My awesome service"}
+service, _ := NewMDNSService(host, "_foobar._tcp", "", "", 8000, nil, info)
 
+// Create the mDNS server, defer shutdown
+server, _ := mdns.NewServer(&mdns.Config{Zone: service})
+defer server.Shutdown()
+```
 
 Doing a lookup for service providers is also very simple:
 
-    // Make a channel for results and start listening
-    entriesCh := make(chan *mdns.ServiceEntry, 4)
-    go func() {
-        for entry := range entriesCh {
-            fmt.Printf("Got new entry: %v\n", entry)
-        }
-    }()
-
-    // Start the lookup
-    mdns.Lookup("_foobar._tcp", entriesCh)
-    close(entriesCh)
-
+```go
+// Make a channel for results and start listening
+entriesCh := make(chan *mdns.ServiceEntry, 4)
+go func() {
+    for entry := range entriesCh {
+        fmt.Printf("Got new entry: %v\n", entry)
+    }
+}()
+
+// Start the lookup
+mdns.Lookup("_foobar._tcp", entriesCh)
+close(entriesCh)
+```