better introduce in readme:)

Author: detailyang

README.md

@@ -1,3 +1,54 @@
 # pre-commit-shell
 ![Branch master](https://img.shields.io/badge/branch-master-brightgreen.svg?style=flat-square)[![Build](https://api.travis-ci.org/detailyang/pre-commit-shell.svg)](https://travis-ci.org/detailyang/pre-commit-shell)[![GitHub license](https://img.shields.io/badge/license-MIT-blue.svg)](https://raw.githubusercontent.com/detailyang/pre-commit-shell/master/LICENSE)[![release](https://img.shields.io/github/release/detailyang/pre-commit-shell.svg)](https://github.com/detailyang/pre-commit-shell/releases)
+
 pre commit wrapper shellcheck
+pre-commit-shell is a [pre-commit](https://github.com/pre-commit/pre-commit) commponent, which wrapper [shellcheck](https://www.shellcheck.net/) to check shell scripts:)
+
+Table of Contents
+-----------------
+
+  * [Requirements](#requirements)
+  * [Install](#install)
+  * [Contributing](#contributing)
+  * [License](#license)
+  * [Author](#author)
+
+Requirements
+------------
+  pre-commit-shell requires the following to run:
+
+  * [pre-commit](pre-commit.com)
+  * [shellcheck](https://www.shellcheck.net/)
+    
+
+Install
+---------
+
+1. create .pre-commit-config.yaml in you git project
+2. pre-commit install 
+3. enjoy it
+
+example .pre-commit-config.yaml as following:
+
+```yaml
+-   repo: git://github.com/detailyang/pre-commit-shell
+    sha: 1.0.0
+    hooks:
+    - id: shell-lint
+```
+Contributing
+------------
+
+To contribute to pre-commit-shell, clone this repo locally and commit your code on a separate branch. 
+
+
+Author
+------
+
+> GitHub [@detailyang](https://github.com/detailyang)     
+
+
+License
+-------
+
+pre-commit-shell is licensed under the [MIT] license.