update README to include support for web

README.md

@@ -35,6 +35,8 @@ The resulting ComfyUI node extension project will automatically come with a few
 - Support for Ruff linter
 - A pre-commit hook for the Ruff linter
 - An `entry_point` that will ensure that ComfyUI can load your extension regardless of how it's installed
+- An optional `web` directory if your extension will include custom javascript
+  - If selected, `web` will also be added to the project's `MANIFEST.in` to ensure that any non-python code in `web` will also be correctly installed
 
 In progress (still needs a little work):
 - Testing via PyTest, including a basic integration/sanity check