use import in some examples

Author: zloirock

packages/core-js-builder/README.md

@@ -3,7 +3,7 @@
 For some cases could be useful to exclude some `core-js` features or generate a polyfill for target engines. This API helps conditionally include or exclude certain parts of [`core-js`](https://github.com/zloirock/core-js) and build for targets. `modules`, `exclude` and `targets` options are specified in [the `core-js-compat` format](https://github.com/zloirock/core-js/tree/master/packages/core-js-compat).
 
 ```js
-const builder = require('core-js-builder');
+import builder from 'core-js-builder';
 
 const bundle = await builder({
  modules: ['core-js/actual', 'esnext.reflect'], // entries / modules / namespaces, by default - all `core-js` modules

packages/core-js-compat/README.md

@@ -3,10 +3,12 @@
 [`core-js-compat` package](https://github.com/zloirock/core-js/tree/master/packages/core-js-compat) contains data about the necessity of [`core-js`](https://github.com/zloirock/core-js) modules and API for getting a list of required core-js modules by browserslist query.
 
 ```js
+import compat from 'core-js-compat';
+
 const {
  list, // array of required modules
  targets, // object with targets for each module
-} = require('core-js-compat')({
+} = compat({
  targets: '> 1%', // browserslist query or object of minimum environment versions to support, see below
  modules: [ // optional list / filter of modules - regex, sting or an array of them:
  'core-js/actual', // - an entry point