Add generated file

This PR adds generated files under pkg/client and vendor folder.

vendor/golang.org/x/tools/cmd/present/play.go

@@ -0,0 +1,43 @@
+// Copyright 2012 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package main
+
+import (
+	"bytes"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"path/filepath"
+	"time"
+
+	"golang.org/x/tools/godoc/static"
+)
+
+var scripts = []string{"jquery.js", "jquery-ui.js", "playground.js", "play.js"}
+
+// playScript registers an HTTP handler at /play.js that serves all the
+// scripts specified by the variable above, and appends a line that
+// initializes the playground with the specified transport.
+func playScript(root, transport string) {
+	modTime := time.Now()
+	var buf bytes.Buffer
+	for _, p := range scripts {
+		if s, ok := static.Files[p]; ok {
+			buf.WriteString(s)
+			continue
+		}
+		b, err := ioutil.ReadFile(filepath.Join(root, "static", p))
+		if err != nil {
+			panic(err)
+		}
+		buf.Write(b)
+	}
+	fmt.Fprintf(&buf, "\ninitPlayground(new %v());\n", transport)
+	b := buf.Bytes()
+	http.HandleFunc("/play.js", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-type", "application/javascript")
+		http.ServeContent(w, r, "", modTime, bytes.NewReader(b))
+	})
+}