Update readme

Author: goto-bus-stop

README.md

@@ -27,14 +27,13 @@ npm install acorn-node
 var acorn = require('acorn-node')
 ```
 
-The API is the same as [acorn](https://github.com/acornjs/acorn), but the following syntax features are enabled by default:
+The API is the same as [acorn](https://github.com/acornjs/acorn), but with plugins to match Node.js behaviour.
 
- - Public and private class instance fields
- - Public and private class static fields
+- Currently no plugins are in use as the main `acorn` branch supports the same syntax as Node.js.
 
-And the following options have different defaults from acorn, to match Node modules:
+The following options have different defaults from acorn, to match Node modules:
 
- - `ecmaVersion: 2021`
+ - `ecmaVersion: 2022`
  - `allowHashBang: true`
  - `allowReturnOutsideFunction: true`
 
@@ -48,9 +47,3 @@ See the [acorn documentation](https://github.com/acornjs/acorn#distwalkjs) for d
 ## License
 
 The files in the repo root and the ./test folder are licensed as [Apache-2.0](LICENSE.md).
-
-The files in lib/ are generated from other packages:
-
-- lib/class-fields: [acorn-class-fields](https://github.com/acornjs/acorn-class-fields), MIT
-- lib/class-private-elements: [acorn-class-private-elements](https://github.com/acornjs/acorn-class-private-elements), MIT
-- lib/static-class-features: [acorn-static-class-features](https://github.com/acornjs/acorn-static-class-features), MIT