diff --git a/README.md b/README.md
index f26de30..75998c8 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,8 @@
 # Golang-iDevice
+[![go doc](https://godoc.org/github.com/electricbubble/gidevice?status.svg)](https://pkg.go.dev/github.com/electricbubble/gidevice?tab=doc#pkg-index)
+[![go report](https://goreportcard.com/badge/github.com/electricbubble/gidevice)](https://goreportcard.com/report/github.com/electricbubble/gidevice)
+[![license](https://img.shields.io/github/license/electricbubble/gidevice)](https://github.com/electricbubble/gidevice/blob/master/LICENSE)
+
 
 ## Installation
 
@@ -34,6 +38,217 @@ func main() {
 
 ```
 
+#### DeveloperDiskImage
+
+```go
+package main
+
+import (
+	"encoding/base64"
+	giDevice "github.com/electricbubble/gidevice"
+	"log"
+)
+
+func main() {
+	usbmux, err := giDevice.NewUsbmux()
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	devices, err := usbmux.Devices()
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	if len(devices) == 0 {
+		log.Fatal("No Device")
+	}
+
+	d := devices[0]
+
+	imageSignatures, err := d.Images()
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	for i, imgSign := range imageSignatures {
+		log.Printf("[%d] %s\n", i+1, base64.StdEncoding.EncodeToString(imgSign))
+	}
+
+	dmgPath := "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport/14.4/DeveloperDiskImage.dmg"
+	signaturePath := "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport/14.4/DeveloperDiskImage.dmg.signature"
+
+	err = d.MountDeveloperDiskImage(dmgPath, signaturePath)
+	if err != nil {
+		log.Fatalln(err)
+	}
+}
+
+```
+
+#### App
+
+```go
+package main
+
+import (
+	giDevice "github.com/electricbubble/gidevice"
+	"log"
+	"path/filepath"
+)
+
+func main() {
+	usbmux, err := giDevice.NewUsbmux()
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	devices, err := usbmux.Devices()
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	if len(devices) == 0 {
+		log.Fatalln("No Device")
+	}
+
+	d := devices[0]
+
+	bundleID := "com.apple.Preferences"
+	pid, err := d.AppLaunch(bundleID)
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	err = d.AppKill(pid)
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	runningProcesses, err := d.AppRunningProcesses()
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	for _, process := range runningProcesses {
+		if process.IsApplication {
+			log.Printf("%4d\t%-24s\t%-36s\t%s\n", process.Pid, process.Name, filepath.Base(process.RealAppName), process.StartDate)
+		}
+	}
+}
+
+```
+
+#### Screenshot
+
+```go
+package main
+
+import (
+	giDevice "github.com/electricbubble/gidevice"
+	"image"
+	"image/jpeg"
+	"image/png"
+	"log"
+	"os"
+)
+
+func main() {
+	usbmux, err := giDevice.NewUsbmux()
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	devices, err := usbmux.Devices()
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	if len(devices) == 0 {
+		log.Fatalln("No Device")
+	}
+
+	d := devices[0]
+
+	raw, err := d.Screenshot()
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	img, format, err := image.Decode(raw)
+	if err != nil {
+		log.Fatalln(err)
+	}
+	userHomeDir, _ := os.UserHomeDir()
+	file, err := os.Create(userHomeDir + "/Desktop/s1." + format)
+	if err != nil {
+		log.Fatalln(err)
+	}
+	defer func() { _ = file.Close() }()
+	switch format {
+	case "png":
+		err = png.Encode(file, img)
+	case "jpeg":
+		err = jpeg.Encode(file, img, nil)
+	}
+	if err != nil {
+		log.Fatalln(err)
+	}
+	log.Println(file.Name())
+}
+
+```
+
+#### SimulateLocation
+
+```go
+package main
+
+import (
+	giDevice "github.com/electricbubble/gidevice"
+	"log"
+)
+
+func main() {
+	usbmux, err := giDevice.NewUsbmux()
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	devices, err := usbmux.Devices()
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	if len(devices) == 0 {
+		log.Fatalln("No Device")
+	}
+
+	d := devices[0]
+
+	// https://api.map.baidu.com/lbsapi/getpoint/index.html
+	if err = d.SimulateLocationUpdate(116.024067, 40.362639, giDevice.CoordinateSystemBD09); err != nil {
+		log.Fatalln(err)
+	}
+
+	// https://developer.amap.com/tools/picker
+	// https://lbs.qq.com/tool/getpoint/index.html
+	// if err = d.SimulateLocationUpdate(120.116979, 30.252876, giDevice.CoordinateSystemGCJ02); err != nil {
+	// 	log.Fatalln(err)
+	// }
+
+	// if err = d.SimulateLocationUpdate(121.499763, 31.239580,giDevice.CoordinateSystemWGS84); err != nil {
+	// if err = d.SimulateLocationUpdate(121.499763, 31.239580); err != nil {
+	// 	log.Fatalln(err)
+	// }
+
+	// err = d.SimulateLocationRecover()
+	// if err != nil {
+	// 	log.Fatalln(err)
+	// }
+}
+
+```
 
 #### XCTest
 
@@ -44,8 +259,8 @@ import (
 	"fmt"
 	giDevice "github.com/electricbubble/gidevice"
 	"log"
-	"sync"
-	"time"
+	"os"
+	"os/signal"
 )
 
 func main() {
@@ -63,15 +278,15 @@ func main() {
 		log.Fatal("No Device")
 	}
 
-	dev := devices[0]
+	d := devices[0]
 
-	out, cancel, err := dev.XCTest("com.leixipaopao.WebDriverAgentRunner.xctrunner")
+	out, cancel, err := d.XCTest("com.leixipaopao.WebDriverAgentRunner.xctrunner")
 	if err != nil {
 		log.Fatal(err)
 	}
 
-	var wg sync.WaitGroup
-	wg.Add(1)
+	done := make(chan os.Signal, 1)
+	signal.Notify(done, os.Interrupt)
 
 	go func() {
 		for s := range out {
@@ -79,14 +294,10 @@ func main() {
 		}
 	}()
 
-	go func() {
-		time.Sleep(10 * time.Second)
-		cancel()
-		log.Println("DONE")
-		wg.Done()
-	}()
-
-	wg.Wait()
+	<-done
+	cancel()
+	fmt.Println()
+	log.Println("DONE")
 }
 
 ```