Update more Babel references to v7.

Author: jdalton

README.md

@@ -9,7 +9,7 @@ for even smaller cherry-picked builds!
 
 ```shell
 $ npm i --save lodash
-$ npm i --save-dev babel-plugin-lodash babel-cli babel-preset-env
+$ npm i --save-dev babel-plugin-lodash @babel/cli @babel/preset-env
 ```
 
 ## Example
@@ -60,7 +60,7 @@ The `options.id` can be an array of ids.
 
 ###### Babel CLI
 ```sh
-$ babel --plugins lodash --presets es2015 script.js
+$ babel --plugins lodash --presets @babel/es2015 script.js
 ```
 
 ###### Babel API
@@ -91,8 +91,8 @@ require('babel-core').transform('code', {
 > Can this plugin produce ES2015 imports rather than CommonJS imports?
 
 This plugin produces ES2015 imports by default. The
-[transform-es2015-modules-commonjs](https://www.npmjs.com/package/babel-plugin-transform-es2015-modules-commonjs)
-plugin, which is included in the Babel [es2015](http://babeljs.io/docs/plugins/preset-es2015/)
+[`@babel/plugin-transform-modules-commonjs`](https://www.npmjs.com/package/@babel/plugin-transform-modules-commonjs)
+plugin, which is included in the [`@babel/preset-es2015`](https://www.npmjs.com/package/@babel/preset-es2015)
 preset, transforms ES2015 `import` statements to CommonJS. Omit it from your
 preset to preserve ES2015 style imports.