diff --git a/main.go b/main.go
index 3f33f93..c9e433d 100644
--- a/main.go
+++ b/main.go
@@ -10,22 +10,20 @@ import (
 	"net/http"
 	"net/url"
 	"os"
+	"runtime"
 	"strings"
 
-	"github.com/BurntSushi/toml"
 	"github.com/antonholmquist/jason"
 	"github.com/fatih/color"
 )
 
-var VERSION string = "0.0-src" //set with ldflags
-
-type Config struct {
-	YDAppId  string
+var (
+	VERSION  string = "0.0-src" //set with ldflags
+	YDAppId  string             // must set on ldflags
 	YDAppSec string
-}
+)
 
 var debug bool = false
-var config Config
 
 func httpGet(url string) *jason.Object {
 	resp, err := http.Get(url)
@@ -117,11 +115,11 @@ func ydAPI(query string, from string) string {
 	salt := rand.Int31()
 
 	// assume query is in utf-8
-	signstr := fmt.Sprintf("%s%s%d%s", config.YDAppId, query, salt, config.YDAppSec)
+	signstr := fmt.Sprintf("%s%s%d%s", YDAppId, query, salt, YDAppSec)
 	sign := md5.Sum([]byte(signstr))
 	uri := fmt.Sprintf(
 		"https://openapi.youdao.com/api?appKey=%s&q=%s&from=%s&to=zh-CHS&salt=%d&sign=%x",
-		config.YDAppId, url.QueryEscape(query), from, salt, sign)
+		YDAppId, url.QueryEscape(query), from, salt, sign)
 
 	if debug {
 		log.Printf("Req: %s", uri)
@@ -163,12 +161,11 @@ func showHelp() {
 
 func main() {
 	var interative, help bool
-	var configfile, from string
+	var from string
 	flag.BoolVar(&help, "h", false, "show this help.")
 	flag.BoolVar(&interative, "i", false, "interative mode, :q  \\q  EOF or Ctrl+C to exit.")
 	flag.BoolVar(&debug, "d", false, "log api request")
 	flag.StringVar(&from, "f", "EN", "translate-from language, default: EN")
-	flag.StringVar(&configfile, "c", "~/.ydgo", "translate-from language, default: EN")
 	flag.Parse()
 
 	if help {
@@ -176,16 +173,6 @@ func main() {
 		os.Exit(0)
 	}
 
-	configfile = NormalizePath(configfile)
-	_, err := os.Stat(configfile)
-	if err != nil {
-		log.Fatal("Config file is missing: ", configfile)
-	}
-
-	if _, err := toml.DecodeFile(configfile, &config); err != nil {
-		log.Fatal(err)
-	}
-
 	if interative || flag.NArg() == 0 {
 		interativeMode(from)
 		return
@@ -193,4 +180,8 @@ func main() {
 
 	query := strings.Join(flag.Args(), " ")
 	printExplain(query, httpGet(ydAPI(query, from)))
+	if runtime.GOOS == "windows" {
+		fmt.Println("\nPress 'Enter' to continue...")
+		bufio.NewReader(os.Stdin).ReadBytes('\n')
+	}
 }
diff --git a/main_test.go b/main_test.go
new file mode 100644
index 0000000..df693d5
--- /dev/null
+++ b/main_test.go
@@ -0,0 +1,126 @@
+package main
+
+import (
+	"reflect"
+	"testing"
+
+	"github.com/antonholmquist/jason"
+)
+
+func Test_httpGet(t *testing.T) {
+	ret := []byte(`{
+    "errorCode": "0",
+	"query": "good",
+	"translation": [
+		"好"
+	],
+	"basic": {
+		"phonetic": "gʊd",
+		"uk-phonetic": "gʊd",
+		"us-phonetic": "ɡʊd",
+		"uk-speech": "XXXX",
+		"us-speech": "XXXX",
+		"explains": [
+			"好处",
+			"好的",
+			"好"
+		]
+	},
+	"web": [
+		{
+			"key": "good",
+			"value": [
+				"良好",
+				"善",
+				"美好"
+			]
+		}
+	],
+	"dict": {
+		"url": "yddict://m.youdao.com/dict?le=eng&q=good"
+	},
+	"webdict": {
+		"url": "http://m.youdao.com/dict?le=eng&q=good"
+	},
+	"l": "EN2zh-CHS",
+	"tSpeakUrl": "XXX",
+	"speakUrl": "XXX"
+}`)
+	obj, _ := jason.NewObjectFromBytes(ret)
+	type args struct {
+		url string
+	}
+	tests := []struct {
+		name string
+		args args
+		want *jason.Object
+	}{
+		// TODO: Add test cases.
+		{"mock", args{"http://www.mocky.io/v2/5d11ba66310000913e08cdcd"}, obj},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := httpGet(tt.args.url); !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("httpGet() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
+
+func Test_printExplain(t *testing.T) {
+	ret := []byte(`{
+    "errorCode": "0",
+	"query": "good",
+	"translation": [
+		"好"
+	],
+	"basic": {
+		"phonetic": "gʊd",
+		"uk-phonetic": "gʊd",
+		"us-phonetic": "ɡʊd",
+		"uk-speech": "XXXX",
+		"us-speech": "XXXX",
+		"explains": [
+			"好处",
+			"好的",
+			"好"
+		]
+	},
+	"web": [
+		{
+			"key": "good",
+			"value": [
+				"良好",
+				"善",
+				"美好"
+			]
+		}
+	],
+	"dict": {
+		"url": "yddict://m.youdao.com/dict?le=eng&q=good"
+	},
+	"webdict": {
+		"url": "http://m.youdao.com/dict?le=eng&q=good"
+	},
+	"l": "EN2zh-CHS",
+	"tSpeakUrl": "XXX",
+	"speakUrl": "XXX"
+}`)
+	obj, _ := jason.NewObjectFromBytes(ret)
+	type args struct {
+		q string
+		v *jason.Object
+	}
+	tests := []struct {
+		name string
+		args args
+	}{
+		// TODO: Add test cases.
+		{"good", args{"good", obj}},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			printExplain(tt.args.q, tt.args.v)
+		})
+	}
+}
diff --git a/make_release.sh b/make_release.sh
index 50979f1..8beb5e2 100644
--- a/make_release.sh
+++ b/make_release.sh
@@ -1,19 +1,17 @@
 #!/bin/bash
+YDAPPID=""
+YDAPPSEC=""
+source .ydkey #
 
-GITVER=$(git rev-parse --short HEAD)
-VER=$1
-
-if [[ -z $VER ]]; then
-  VER=$GITVER
-fi
-
+VER=$(git describe --tags || git rev-parse --short HEAD)
+LDFLAGS="-s -w -X main.VERSION=$VER -X main.YDAppId=$YDAPPID -X main.YDAppSec=$YDAPPSEC"
 
 BIN=ydgo
 rm -fv ydgo_*
 
 # for normal unix env
 for OS in darwin linux; do
-  CGO_ENABLED=0 GOARCH=amd64 GOOS=$OS go build -o ${BIN}_${OS} -ldflags "-s -w -X main.VERSION=$VER"
+  CGO_ENABLED=0 GOARCH=amd64 GOOS=$OS go build -o ${BIN}_${OS} -ldflags "${LDFLAGS}"
 done
-CGO_ENABLED=0 GOARCH=amd64 GOOS=windows go build -o ${BIN}_windows.exe -ldflags "-s -w -X main.VERSION=$VER"
+CGO_ENABLED=0 GOARCH=amd64 GOOS=windows go build -o ${BIN}_windows.exe -ldflags "${LDFLAGS}"