add artplayerPluginBacklight

packages/artplayer-plugin-backlight/README.md

@@ -0,0 +1,49 @@
+# artplayer-plugin-gif
+
+Backlight plugin for ArtPlayer
+
+## Demo
+
+[Checkout the demo](https://artplayer.org/backlight/) from Github Pages
+
+## Install
+
+Install with `npm`
+
+```
+$ npm install artplayer-plugin-backlight
+```
+
+Or install with `yarn`
+
+```
+$ yarn add artplayer-plugin-backlight
+```
+
+```js
+import artplayerPluginBacklight from 'artplayer-plugin-backlight';
+```
+
+Or umd builds are also available
+
+```html
+<script src="artplayer-plugin-backlight.js"></script>
+```
+
+Will expose the global variable to `window.artplayerPluginBacklight`.
+
+## Usage
+
+This will add a button called "GIF" in the bottom control bar.
+
+```js
+var art = new Artplayer({
+    container: '.artplayer-app',
+    url: 'path/to/video.mp4',
+    plugins: [artplayerPluginBacklight],
+});
+```
+
+## License
+
+MIT © [Harvey Zack](https://sleepy.im/)