docs: simplify install instructions and add 'JavaScript With Babel' setup example

Author: Rel1cx

README.md

@@ -32,14 +32,7 @@ A series of composable ESLint plugins for libraries and frameworks that use Reac
 ### Install
 
 ```sh
-# npm
 npm install --save-dev typescript-eslint @eslint-react/eslint-plugin
-
-# yarn
-yarn add --dev typescript-eslint @eslint-react/eslint-plugin
-
-# pnpm
-pnpm add --save-dev typescript-eslint @eslint-react/eslint-plugin
 ```
 
 ### Setup

website/pages/docs/getting-started.mdx

@@ -5,14 +5,7 @@
 #### Install
 
 ```sh filename="Terminal"
-# npm
 npm install --save-dev @eslint-react/eslint-plugin
-
-# yarn
-yarn add --dev @eslint-react/eslint-plugin
-
-# pnpm
-pnpm add --save-dev @eslint-react/eslint-plugin
 ```
 
 #### Setup
@@ -46,14 +39,7 @@ export default [
 #### Install
 
 ```sh filename="Terminal"
-# npm
 npm install --save-dev typescript-eslint @eslint-react/eslint-plugin
-
-# yarn
-yarn add --dev typescript-eslint @eslint-react/eslint-plugin
-
-# pnpm
-pnpm add --save-dev typescript-eslint @eslint-react/eslint-plugin
 ```
 
 #### Setup
@@ -80,3 +66,31 @@ export default tseslint.config({
   },
 });
 ```
+
+### JavaScript With Babel
+
+```sh filename="Terminal"
+npm install --save-dev @babel/core @babel/eslint-parser @babel/preset-env @babel/preset-react @eslint-react/eslint-plugin
+```
+
+```js filename="eslint.config.js"
+import parser from "@babel/eslint-parser";
+import react from "@eslint-react/eslint-plugin";
+
+export default [
+  {
+    files: ["**/*.js", "**/*.jsx"],
+    languageOptions: {
+      parser,
+      parserOptions: {
+        requireConfigFile: false,
+        babelOptions: {
+          babelrc: false,
+          configFile: false,
+          presets: ["@babel/preset-env", "@babel/preset-react"],
+        },
+      },
+    },
+  },
+];
+```