add more examples

Author: shogo82148

README.md

@@ -6,22 +6,67 @@ androidbinary
 
 Android binary file parser
 
-## Parse XML binary
+## High Level API
+
+### Parse APK files
 
 ``` go
 package main
 
 import (
-	"fmt"
+	"github.com/shogo82148/androidbinary/apk"
+)
+
+func main() {
+	pkg, _ := apk.OpenFile("your-android-app.apk")
+	defer pkg.Close()
+
+	icon, _ := apk.Icon(nil) // returns the icon of APK as image.Image
+	pkgName := pkg.PackageName() // returns the pakcage name
+}
+```
+
+## Low Lebel API
+
+### Parse XML binary
+
+``` go
+package main
+
+import (
+	"encoding/xml"
+
 	"github.com/shogo82148/androidbinary"
-	"os"
+	"github.com/shogo82148/androidbinary/apk"
 )
 
 func main() {
-	f, _ := os.Open("AndroidManifest")
+	f, _ := os.Open("AndroidManifest.xml")
 	xml, _ := androidbinary.NewXMLFile(f)
 	reader := xml.Reader()
+
 	// read XML from reader
+	var manifest apk.Manifest
+	data, _ := ioutil.ReadAll(reader)
+	xml.Unmarshal(data, &manifest)
+}
+```
+
+### Parse Resource files
+
+``` go
+package main
+
+import (
+	"fmt"
+	"github.com/shogo82148/androidbinary"
+)
+
+func main() {
+	f, _ := os.Open("resources.arsc")
+	rsc, _ := androidbinary.NewTableFile(f)
+	resorce, _ := rsc.GetResource(androidbinary.ResId(0xCAFEBABE), nil)
+	fmt.Println(resource)
 }
 ```