chore: add readme

Author: cxtom

README.md

@@ -2,3 +2,39 @@
 
 reload nodejs modules with [batchdelcache](https://github.com/NoCoreNode/batchdelcache)
 
+
+[![Build Status](https://travis-ci.org/NoCoreNode/reload-modules.svg?branch=master)](https://travis-ci.org/NoCoreNode/reload-modules)
+[![Coverage Status](https://coveralls.io/repos/github/NoCoreNode/reload-modules/badge.svg?branch=master)](https://coveralls.io/github/NoCoreNode/reload-modules?branch=master)
+
+## Installation
+
+```bash
+# use npm
+npm install reload-modules
+# or use yarn
+yarn add reload-modules
+```
+
+## Environment
+
+Node.js 10+
+
+## Usage
+
+```js
+import Reloader from 'reload-modules';
+
+const reloader = new Reloader({
+    fileMap: {
+        mod1: 'abcd',
+        mod2: 'efcg',
+    },
+    context: resolve(__dirname, './fixtures'),
+    commonRootPath: resolve(__dirname, './fixtures/mainModule.js'),
+});
+
+reloader.reload({
+    mod1: 'xxxx',
+    mod2: 'xxxx',
+});
+```