docs: update readme

README.md

@@ -1,7 +1,7 @@
 # Kong Markdown
 
 > [!IMPORTANT]
-> This repository and the `@kong/markdown` package are currently in development. Breaking changes should be expected.
+> This repository and the `@kong/markdown` package are currently in development on the `alpha` branch. Breaking changes should be expected.
 
 Kong's open-source markdown renderer and live editor.
 
@@ -19,13 +19,12 @@ Kong's open-source markdown renderer and live editor.
 
 ## TODO
 
-- [ ] Utilize design tokens
-- [ ] Add new icons for toolbar
-- [ ] Possibly export a separate bundle as a web component utilizing [petite-vue](https://github.com/vuejs/petite-vue)
+- [X] Utilize design tokens
+- [X] Add new icons for toolbar
+- [ ] Possibly export separate bundles for syntax highlighting options
 - [ ] Document theming instructions
 - [ ] Light / Dark mode
-- [ ] Default `shikiji` theme(s)
-- [ ] Supported languages (instead of allowing all)
+- [ ] Default styles for markdown HTML elements
 
 ## Usage