copied example to readme

Author: FezVrasta

README.md

@@ -18,6 +18,31 @@ Install it with
 npm install react-resize-aware --save
 ```
 
+# Usage
+
+```jsx
+import React, { Component } from 'react'
+import { findDOMNode } from 'react-dom'
+import ResizeAware from 'react-resize-aware'
+
+export default class FooBar extends Component {
+  render() {
+    return (
+      <ResizeWare ref='container'>
+        Hello, World!
+      </ResizeAware>
+    )
+  }
+
+  componentDidMount() {
+    findDOMNode(this.refs.container).addEventListener((evt) => {
+      console.log('Component has been resized!')
+    })
+  }
+}
+```
+
+
 # License
 
 MIT License