docs(babel): Add docs about transform-runtime

Author: adambrgmn

packages/babel-preset-base/README.md

@@ -72,6 +72,7 @@ be loaded by default, but you can disable it through options.
 -   `@babel/plugin-syntax-import-meta`
 -   `@babel/plugin-proposal-class-properties` - with option `{ "loose": false }`.
 -   `@babel/plugin-proposal-json-strings`
+-   `@babel/plugin-transform-runtime` - with options `{corejs: false, helpers: true, regenerator: true, useESModules: true }`
 
 `@wpackio/babel-preset-base` can be configured to select which `stage-3` plugins to
 exclude.
@@ -122,6 +123,12 @@ Set to `true` to disable [`@babel/plugin-proposal-class-properties`](https://bab
 
 Set to `true` to disable [`@babel/plugin-proposal-json-strings`](https://babeljs.io/docs/en/babel-plugin-proposal-json-strings).
 
+#### `noRuntime`
+
+`boolean`, defaults to false.
+
+Set to `true` to disable [`@babel/plugin-transform-runtime`](https://babeljs.io/docs/en/babel-plugin-transform-runtime).
+
 #### `presetEnv` Options for `@babel/preset-env`
 
 `object`, defaults to `{}`.