diff --git a/README.md b/README.md
index 826998b..1a2ac4d 100644
--- a/README.md
+++ b/README.md
@@ -9,8 +9,53 @@
 A port of [figlet](http://www.figlet.org/) to golang.  
 Make it easier to use,add some new feature such as colorized outputs.
 
-##Install
-    go get -u github.com/getwe/figlet4go
-
 ##Usage
 
+###Install
+    go get -u github.com/getwe/figlet4go
+
+###Demo
+```go
+package main
+
+import (
+	"fmt"
+	"github.com/fatih/color"
+	"github.com/getwe/figlet4go"
+)
+
+func main() {
+	str := "golang"
+	ascii := figlet4go.NewAsciiRender()
+	// most simple Usage
+	renderStr, _ := ascii.Render(str)
+	fmt.Println(renderStr)
+
+	// change the font color
+	options := figlet4go.NewRenderOptions()
+	options.FontColor = make([]color.Attribute, len(str))
+	options.FontColor[0] = color.FgMagenta
+	options.FontColor[1] = color.FgYellow
+	options.FontColor[2] = color.FgBlue
+	options.FontColor[3] = color.FgCyan
+	options.FontColor[4] = color.FgRed
+	options.FontColor[5] = color.FgWhite
+	renderStr, _ = ascii.RenderOpts(str, options)
+	fmt.Println(renderStr)
+
+	// change the font
+	options.FontName = "larry3d"
+	// except the default font,others need to be load from disk
+	// here is the font :
+	// ftp://ftp.figlet.org/pub/figlet/fonts/contributed.tar.gz
+	// ftp://ftp.figlet.org/pub/figlet/fonts/international.tar.gz
+	// download and extract to the disk,then specify the file path to load
+	ascii.LoadFont("/usr/local/Cellar/figlet/2.2.5/share/figlet/fonts/")
+
+	renderStr, _ = ascii.RenderOpts(str, options)
+	fmt.Println(renderStr)
+
+}
+```
+
+![screenshot](./screenshot/demo1.jpg)
diff --git a/figlet/buildinfont.go b/buildinfont.go
similarity index 99%
rename from figlet/buildinfont.go
rename to buildinfont.go
index c0ac287..5103c8f 100644
--- a/figlet/buildinfont.go
+++ b/buildinfont.go
@@ -1,4 +1,4 @@
-package figlet
+package figlet4go
 
 // Build in source font
 func buildInFont() string {
diff --git a/demo/demo.go b/demo/demo.go
new file mode 100644
index 0000000..d60a259
--- /dev/null
+++ b/demo/demo.go
@@ -0,0 +1,40 @@
+package main
+
+import (
+	"fmt"
+	"github.com/fatih/color"
+	"github.com/getwe/figlet4go"
+)
+
+func main() {
+	str := "golang"
+	ascii := figlet4go.NewAsciiRender()
+	// most simple Usage
+	renderStr, _ := ascii.Render(str)
+	fmt.Println(renderStr)
+
+	// change the font color
+	options := figlet4go.NewRenderOptions()
+	options.FontColor = make([]color.Attribute, len(str))
+	options.FontColor[0] = color.FgMagenta
+	options.FontColor[1] = color.FgYellow
+	options.FontColor[2] = color.FgBlue
+	options.FontColor[3] = color.FgCyan
+	options.FontColor[4] = color.FgRed
+	options.FontColor[5] = color.FgWhite
+	renderStr, _ = ascii.RenderOpts(str, options)
+	fmt.Println(renderStr)
+
+	// change the font
+	options.FontName = "larry3d"
+	// except the default font,others need to be load from disk
+	// here is the font :
+	// ftp://ftp.figlet.org/pub/figlet/fonts/contributed.tar.gz
+	// ftp://ftp.figlet.org/pub/figlet/fonts/international.tar.gz
+	// download and extract to the disk,then specify the file path to load
+	ascii.LoadFont("/usr/local/Cellar/figlet/2.2.5/share/figlet/fonts/")
+
+	renderStr, _ = ascii.RenderOpts(str, options)
+	fmt.Println(renderStr)
+
+}
diff --git a/figlet/font.go b/font.go
similarity index 99%
rename from figlet/font.go
rename to font.go
index 758175e..0e14985 100644
--- a/figlet/font.go
+++ b/font.go
@@ -1,4 +1,4 @@
-package figlet
+package figlet4go
 
 import (
 	"errors"
diff --git a/figlet/render.go b/render.go
similarity index 99%
rename from figlet/render.go
rename to render.go
index 36a9d0a..226471a 100644
--- a/figlet/render.go
+++ b/render.go
@@ -1,4 +1,4 @@
-package figlet
+package figlet4go
 
 import (
 	"errors"
diff --git a/screenshot/demo1.jpg b/screenshot/demo1.jpg
new file mode 100644
index 0000000..ac7859c
Binary files /dev/null and b/screenshot/demo1.jpg differ