update document

Author: GinMu

.gitignore

@@ -59,3 +59,4 @@ typings/
 
 # next.js build output
 .next
+lib

README.md

@@ -1,3 +1,61 @@
 # jcc_file
 
-[![Build Status](https://travis-ci.com/JCCDex/jcc_file.svg?branch=master)](https://travis-ci.com/JCCDex/jcc_file)
+![npm](https://img.shields.io/npm/v/jcc_file.svg)
+[![Build Status](https://travis-ci.com/JCCDex/jcc_file.svg?branch=master)](https://travis-ci.com/JCCDex/jcc_file)
+[![Coverage Status](https://coveralls.io/repos/github/JCCDex/jcc_file/badge.svg?branch=master)](https://coveralls.io/github/JCCDex/jcc_file?branch=master)
+[![npm downloads](https://img.shields.io/npm/dm/jcc_file.svg)](http://npm-stat.com/charts.html?package=jcc_file)
+
+## Installtion
+
+```shell
+npm install jcc_file
+```
+
+## API
+
+### importFile
+
+import file to get result, if we need, we aslo could decode qrcode image.
+
+```javascript
+const importFile = require('jcc_file').importFile
+// import { importFile } from 'jcc_file';
+importFile(event, needConvert).then(res => {}).catch(error => {})
+```
+
+Parameters
+
+- `event`- `object`
+- `needConvert`- `boolean`
+  
+  - if decode image
+
+### exportToText
+
+export text content to text file
+
+```javascript
+const exportToText = require('jcc_file').exportToText
+// import { exportToText } from 'jcc_file';
+exportToText(text, name).then(() => {}).catch(error => {})
+```
+
+Parameters
+
+- `text`- `string`
+- `name`- `string`
+
+### exportToQR
+
+export text content to text file
+
+```javascript
+const exportToQR = require('jcc_file').exportToQR
+// import { exportToQR } from 'jcc_file';
+exportToQR(text, name).then(() => {}).catch(error => {})
+```
+
+Parameters
+
+- `text`- `string`
+- `name`- `string`

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "jcc_file",
-  "version": "0.0.1",
+  "version": "1.0.0",
   "description": "import and export file of jcc",
   "main": "lib/index.js",
   "scripts": {