Add CHANGELOG entry and docs for CSS export

Closes https://github.com/kytta/shareon/issues/35
See: https://codeberg.org/kytta/shareon/pulls/12

CHANGELOG.md

@@ -19,6 +19,16 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
     <script src="path/to/shareon.js" init>
     ```
 
+- CSS export for use in Webpack/Rollup/etc. ([#35](https://github.com/kytta/shareon/issues/35))
+
+  ```js
+  import "shareon/css";
+  ```
+
+  ```js
+  require("shareon/css");
+  ```
+
 ### Changed
 
 - **BREAKING:** default version of the package doesn't auto-initialize buttons

README.md

@@ -71,6 +71,7 @@ pnpm add shareon  # or `npm install`, or `yarn add`
 
 ```js
 import { init } from "shareon";
+import "shareon/css"; // most bundlers will transpile this CSS
 
 init();
 ```
@@ -79,6 +80,7 @@ CommonJS imports are also supported:
 
 ```js
 const Shareon = require("shareon");
+require("shareon/css"); // most bundlers will transpile this CSS
 
 Shareon.init();
 ```