chore: expand readme

README.md

@@ -4,7 +4,48 @@
 [![CI Status](https://github.com/wowserhq/io/actions/workflows/ci.yml/badge.svg)](https://github.com/wowserhq/io/actions/workflows/ci.yml)
 [![npm](https://img.shields.io/npm/v/%40wowserhq%2Fio)](https://www.npmjs.com/package/@wowserhq/io)
 
-Wowser IO is an IO utility library for Wowser.
+An IO utility library for Wowser.
+
+## Usage
+
+To install Wowser IO:
+
+```sh
+npm install @wowserhq/io
+```
+
+To use Wowser IO in an ES2015 module environment:
+
+```js
+import * as io from '@wowserhq/io';
+```
+
+To use Wowser IO in a CommonJS module environment:
+
+```js
+const io = require('@wowserhq/io');
+```
+
+## Example
+
+Wowser IO provides a set of types to work with numeric, array, string, struct, and tag-length-value data formats.
+Wowser's IO types permit reading and writing data.
+
+```js
+import * as io from '@wowserhq/io';
+
+const mver = io.struct({
+  version: io.uint32le,
+});
+
+const rawData = new Uint8Array([0x10, 0x00, 0x00, 0x00]);
+const readData = mver.read(rawData);
+
+console.log(readData);
+// { version: 16 }
+```
+
+## License
 
 Wowser IO is copyright © Wowser Contributors. It is licensed under the **MIT** license. See
 `LICENSE` for more information.