[docs] Update Getting Started for babel 6

Author: zpao

docs/docs/getting-started.md

@@ -30,10 +30,15 @@ ReactDOM.render(
 To install React DOM and build your bundle after installing browserify:
 
 ```sh
-$ npm install --save react react-dom
-$ browserify -t babelify main.js -o bundle.js
+$ npm install --save react react-dom babelify babel-preset-react
+$ browserify -t [ babelify --presets [ react ] ] main.js -o bundle.js
 ```
 
+> Note:
+>
+> If you are using ES2015, you will want to also use the `babel-preset-es2015` package.
+
+
 ## Quick Start Without npm
 
 If you're not ready to use npm yet, you can download the starter kit which includes prebuilt copies of React and React DOM.
@@ -94,16 +99,20 @@ Note that some browsers (Chrome, e.g.) will fail to load the file unless it's se
 First install the [Babel](http://babeljs.io/) command-line tools (requires [npm](https://www.npmjs.com/)):
 
 ```
-npm install --global babel
+npm install --global babel-cli
+npm install babel-preset-react
 ```
 
 Then, translate your `src/helloworld.js` file to plain JavaScript:
 
 ```
-babel src --watch --out-dir build
-
+babel --presets react src --watch --out-dir build
 ```
 
+> Note:
+>
+> If you are using ES2015, you will want to also use the `babel-preset-es2015` package.
+
 The file `build/helloworld.js` is autogenerated whenever you make a change. Read the [Babel CLI documentation](http://babeljs.io/docs/usage/cli/) for more advanced usage.
 
 ```javascript{2}