diff --git a/README.md b/README.md
index c4483a0..b0078a5 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,125 @@
 # ts-sfc-plugin
-A plugin for optimizing stateless component in React (tsx)
+
+A plugin for optimizing stateless component of React (tsx)
+
+## Why
+React functional component(SFC) is easy to use and help to reduce code size significantly, but sometimes
+people might have been some misunderstanding about its perfomance. Usually, we think functional components would avoid some overheads like mounting / unmounting / lifecycle checking and memory allocations, but in fact, there're no special optimizations currently (but after react 16 was released, sfc is indeed faster than before).
+
+Fortunately SFC just function in react world, if we do care about performance in production there're still a way to improve and this plugin here come to optimize these situation.
+
+```javascript
+const code1 = (
+  <div>
+    <Avatar />
+  </div>
+)
+
+const code2 = (
+  <div>
+    { Avatar() }
+  </div>
+)
+```
+As we cannot recognize if the component is functional, we have to use an anotation to tag the expression:
+
+```javascript
+<Avatar sfc />
+// Plugin use `sfc` as identifier by default, but you can pass an option to override it.
+```
+
+## How to use
+
+### webpack
+```javascript
+  module: {
+    rules: [
+      {
+        test: /\.(jsx|tsx|js|ts)$/,
+        loader: 'ts-loader',
+        options: {
+          transpileOnly: true,
+          getCustomTransformers: () => ({
+            before: [sfcPlugin()],
+          }),
+          compilerOptions: {
+            module: 'esnext',
+          },
+        },
+        exclude: /node_modules/,
+      }
+    ],
+  }
+```
+
+### code
+
+```javascript
+import React from 'react'
+
+export const Avatar = ({ name }) => {
+  return (
+    <div>
+      <img src=... />
+      <span>{ name }</span>
+    </div>
+  )
+}
+```
+
+```javascript
+import React from 'react'
+import { Avatar } from './avatar.component'
+
+export class App extends React.PureComponent {
+  render() {
+    return (
+      <div>
+        <Avatar name={ 'hello world' } sfc />
+      </div>
+    )
+  }
+}
+```
+
+
+## Defect
+The following code is recommanded
+
+```javascript
+<Avatar sfc>
+// enable rule: `jsx-boolean-value` in tslint.json
+```
+
+using declaration merging in global .d.ts
+```javascript
+import React from 'react'
+
+declare module 'react' {
+  namespace JSX {
+    interface IntrinsicAttributes extends React.Attributes {
+      sfc?: boolean
+    }
+  }
+}
+```
+
+Also, code like the usage will not work as expect, because the plugin does not include any runtime type checking.
+
+```javascript
+const component = <Avatar sfc={ this.props.flag } />
+```
+
+## Benchmark
+
+React 16.4, ```<Dot />```, 50 times, MacBook Pro (Retina, 13-inch, Early 2013)
+
+| Classical | Functional | Direct-call | Auto-transform |
+|--|--|--|--|
+| 660ms | 408ms | 226ms | 229ms |
+
+## Refs
+
+[scu vs sfc](https://stackoverflow.com/questions/45795380/component-with-shouldcomponentupdate-vs-stateless-component-performance)
+
+[45% faster react functional components now](https://medium.com/missive-app/45-faster-react-functional-components-now-3509a668e69f)
diff --git a/package.json b/package.json
index 1d68bfd..a25d84a 100644
--- a/package.json
+++ b/package.json
@@ -20,7 +20,8 @@
   ],
   "files": [
     "index.d.ts",
-    "lib/"
+    "lib/",
+    "index.js"
   ],
   "author": "Saviio",
   "license": "MIT",