Update readme.md

Author: orteth01

readme.md

@@ -1,7 +1,9 @@
 # react-scroll-lock-component
 [![npm version](https://badge.fury.io/js/react-scroll-lock-component.svg)](https://badge.fury.io/js/react-scroll-lock-component)
 
-A React component wrapper that restricts scrolling capabilities of everything except for its children
+A React component wrapper that restricts scrolling capabilities of everything except for its children. 
+
+Wheel events, touchmove events, and key press events that affect page location (e.g. directional arrows, pageup/pagedown/spacebar) are all locked.
 
 ### Demo
 Check out the demo [here](https://orteth01.github.io/react-scroll-lock-component-demo)!
@@ -10,30 +12,32 @@ Check out the demo [here](https://orteth01.github.io/react-scroll-lock-component
 ```
 npm install react-scroll-lock-component
 ```
+or 
+```
+yarn add react-scroll-lock-component
+```
 
 ### Usage
 ```js
 import React, { Component } from 'react';
 import ScrollLock from 'react-scroll-lock-component';
 
-export default class extends Component {
-  render() {
-    return (
-      <div>
-        <ScrollLock> // when scrolling this div nothing else will scroll
-          <div> 
-            ...
-          </div>
+export default () => {
+    <div>
+        <ScrollLock>
+            <div> 
+                {/*
+                unlike normal scroll functionality, when the user scrolls this
+                div and reaches the beginning or end nothing else on the page will scroll
+                */}
+            </div>
         </ScrollLock>
-        
-        <div> // normal scrolling everywhere else
-          ...
+        <div>
+            {/* scrolling elsewhere on the page will be normal */}
         </div>
       </div>
     );
-  }
 }
-
 ```
 
 ### Contributing