diff --git a/README.md b/README.md
index 89f660d..89c5a4e 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,41 @@
 # cron-git
 crontab git task by nodejs
+
+## usage
+```js
+	var o = {
+		dir: __dirname,
+		debug: false,
+		allowNotice: true,
+		pull: (params, callback) => pull(params, callback),
+		push: (params, callback) => push(params, callback),
+		sync: (callback, params_pull, params_push) => sync(callback, params_pull, params_push),
+		schedule: (time, callback, params_pull, params_push) => schedule(time, callback, params_pull, params_push)
+	}
+```
+
+## params_pull
+```js
+	var params = {
+		remote: {
+			repo: 'origin',
+			branch: 'master'
+		},
+		pull_params: {}
+	}
+```
+
+## params_push
+```js
+	var params = {
+		add: {
+			path: './*'
+		},
+		commit: {
+			message: "Committed by cron-git from "+ require('os').hostname()
+		},
+		push_params: ['-u', 'origin', 'master']
+	}
+````
+## License
+Apache-2.0
\ No newline at end of file
diff --git a/index.js b/index.js
index 8fcc8cb..5539aeb 100644
--- a/index.js
+++ b/index.js
@@ -8,7 +8,7 @@ module.exports = function(o_params){
 
 	/* factory mode */
 	var o = {
-		dir: './',
+		dir: __dirname,
 		debug: false,
 		allowNotice: true,
 		pull: (params, callback) => pull(params, callback),
diff --git a/package.json b/package.json
index 2e172fc..b7e93e2 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,7 @@
   "description": "crontab git task",
   "main": "index.js",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "node test.js"
   },
   "repository": {
     "type": "git",