Add 'Server' HTTP header with current GoTTY version

    $ curl -I http://gotty.server/
    HTTP/1.1 200 OK
    Accept-Ranges: bytes
    Content-Length: 407
    Content-Type: text/html; charset=utf-8
    Last-Modified: Fri, 02 Oct 2015 08:04:28 GMT
    Server: GoTTY/0.0.10
    Date: Fri, 02 Oct 2015 08:04:28 GMT

app/app.go

@@ -53,6 +53,8 @@ type Options struct {
 	Preferences     map[string]interface{} `hcl:"preferences"`
 }
 
+var Version = "0.0.10"
+
 var DefaultOptions = Options{
 	Address:         "",
 	Port:            "8080",
@@ -154,6 +156,8 @@ func (app *App) Run() error {
 		siteHandler = wrapBasicAuth(siteHandler, app.options.Credential)
 	}
 
+	siteHandler = wrapHeaders(siteHandler)
+
 	wsMux := http.NewServeMux()
 	wsMux.Handle("/", siteHandler)
 	wsMux.Handle(path+"/ws", wsHandler)
@@ -277,6 +281,13 @@ func wrapLogger(handler http.Handler) http.Handler {
 	})
 }
 
+func wrapHeaders(handler http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Server", "GoTTY/"+Version)
+		handler.ServeHTTP(w, r)
+	})
+}
+
 func wrapBasicAuth(handler http.Handler, credential string) http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		token := strings.SplitN(r.Header.Get("Authorization"), " ", 2)

main.go

@@ -13,7 +13,7 @@ import (
 
 func main() {
 	cmd := cli.NewApp()
-	cmd.Version = "0.0.10"
+	cmd.Version = app.Version
 	cmd.Name = "gotty"
 	cmd.Usage = "Share your terminal as a web application"
 	cmd.HideHelp = true