revise single-file components, with new example sandbox

Author: chrisvfritz

src/v2/guide/single-file-components.md

@@ -50,6 +50,10 @@ Even if you don't like the idea of Single-File Components, you can still leverag
 
 ## Getting Started
 
+### Example Sandbox
+
+If you want to dive right in and start playing with single-file components, check out [this simple todo app](https://codesandbox.io/s/o29j95wx9) on CodeSandbox.
+
 ### For Users New to Module Build Systems in JavaScript
 
 With `.vue` components, we're entering the realm of advanced JavaScript applications. That means learning to use a few additional tools if you haven't already:
@@ -58,11 +62,9 @@ With `.vue` components, we're entering the realm of advanced JavaScript applicat
 
 - **Modern JavaScript with ES2015/16**: Read through Babel's [Learn ES2015 guide](https://babeljs.io/docs/learn-es2015/). You don't have to memorize every feature right now, but keep this page as a reference you can come back to.
 
-After you've taken a day to dive into these resources, we recommend checking out the [webpack-simple](https://github.com/vuejs-templates/webpack-simple) template. Follow the instructions and you should have a Vue project with `.vue` components, ES2015 and hot-reloading running in no time!
-
-The template uses [Webpack](https://webpack.js.org/), a module bundler that takes a number of "modules" and then bundles them into your final application. To learn more about Webpack itself, check out [their official docs](https://webpack.js.org/configuration/) and [Webpack Academy](https://webpack.academy/p/the-core-concepts).
+After you've taken a day to dive into these resources, we recommend checking out the [webpack](https://vuejs-templates.github.io/webpack) template. Follow the instructions and you should have a Vue project with `.vue` components, ES2015, and hot-reloading in no time!
 
-In Webpack, each module can be transformed by a "loader" before being included in the bundle, and Vue offers the [vue-loader](https://github.com/vuejs/vue-loader) plugin to take care of translating `.vue` single-file components. The [webpack-simple](https://github.com/vuejs-templates/webpack-simple) template has already set up everything for you, but if you'd like to learn more about how `.vue` components work with Webpack, you can read [the docs for vue-loader](https://vue-loader.vuejs.org).
+To learn more about Webpack itself, check out [their official docs](https://webpack.js.org/configuration/) and [Webpack Academy](https://webpack.academy/p/the-core-concepts). In Webpack, each file can be transformed by a "loader" before being included in the bundle, and Vue offers the [vue-loader](https://vue-loader.vuejs.org) plugin to translate single-file (`.vue`) components.
 
 ### For Advanced Users