update readme

README.md

@@ -1,2 +1,65 @@
-# image-refractor
-A canvas-based web-component for applying refraction effects to images
+# Image Refractor
+
+A canvas-based web-component for applying animated water-like refraction effects to images.
+
+:wave: [Check out the demo](https://marcantondahmen.github.io/image-refractor/)
+
+## Getting Started
+
+You can either install this [package](https://www.npmjs.com/package/image-refractor)
+with `npm` and import it into your JavaScript or TypeScript project or use it in a browser.
+
+### NPM
+
+Install with `npm`:
+
+```
+npm i --save image-refractor
+```
+
+Import into your project as follows in order to register the custom web-component:
+
+```javascript
+import 'image-refractor';
+```
+
+### CDN
+
+Alternatively just load it from a CDN as follows:
+
+```html
+<script src="https://unpkg.com/image-refractor/dist/image-refractor.js"></script>
+```
+
+## Usage
+
+After importing the component, it can simply be used like any other HTML element:
+
+```html
+<image-refractor
+  width="1000"
+  height="1000"
+  refract="1.333"
+  speed="0.03"
+  intensity="1.0"
+  src="https://domain.com/image.png"
+></image-refractor>
+```
+
+## Options
+
+The component can be configured using the following attributes:
+
+| Attribute   | Description                                                                                           |
+| ----------- | ----------------------------------------------------------------------------------------------------- |
+| `src`       | The texture image                                                                                     |
+| `width`     | The rendered image width in pixels. This describes the canvas resolution.                             |
+| `height`    | The rendered image height in pixels. Also here, the height is used to describe the canvas resolution. |
+| `refract`   | The refraction index that is used.                                                                    |
+| `speed`     | The animation speed. Good values are between `0.01` and `0.1`.                                        |
+| `intensity` | The intensity of the underlaying noise. Higher values generate higher distortion.                     |
+
+## Acknowledgements
+
+Thanks to **SuperHi** for the great inspiration [video](https://www.youtube.com/watch?v=GALjY57ntsk) and
+[Yi-Wen Lin](https://github.com/yiwenl) for his [fbm](https://github.com/yiwenl/glsl-fbm/blob/master/2d.glsl) implementation.