Update README.md

Author: jaywcjlove

README.md

@@ -3,10 +3,15 @@ open-browsers
 
 Attempts to open the browser with a given URL.
 On Mac OS X, attempts to reuse an existing Chrome tab via AppleScript.
-Otherwise, falls back to [opn](https://github.com/sindresorhus/opn) behavior.
+Otherwise, falls back to [opn](https://github.com/sindresorhus/opn) behavior. `open-browsers` form [react-dev-utils](https://github.com/facebook/create-react-app/blob/next/packages/react-dev-utils/openBrowser.js).
 
-`open-browsers` form [react-dev-utils](https://github.com/facebook/create-react-app/blob/next/packages/react-dev-utils/openBrowser.js)
+### Install
 
+```bash
+npm install open-browsers --save-dev
+```
+
+### Usage
 
 > openBrowsers(url: string): boolean