replaced references to elixir and gulp with mix and webpack

frontend.md

@@ -12,9 +12,9 @@ While Laravel does not dictate which JavaScript or CSS pre-processors you use, i
 
 #### CSS
 
-[Laravel Elixir](/docs/{{version}}/elixir) provides a clean, expressive API over compiling SASS or Less, which are extensions of plain CSS that add variables, mixins, and other powerful features that make working with CSS much more enjoyable.
+[Laravel Mix](/docs/{{version}}/mix) provides a clean, expressive API over compiling SASS or Less, which are extensions of plain CSS that add variables, mixins, and other powerful features that make working with CSS much more enjoyable.
 
-In this document, we will briefly discuss CSS compilation in general; however, you should consult the full [Laravel Elixir documentation](/docs/{{version}}/elixir) for more information on compiling SASS or Less.
+In this document, we will briefly discuss CSS compilation in general; however, you should consult the full [Laravel Mix documentation](/docs/{{version}}/mix) for more information on compiling SASS or Less.
 
 #### JavaScript
 
@@ -29,11 +29,11 @@ Before compiling your CSS, install your project's frontend dependencies using NP
 
     npm install
 
-Once the dependencies have been installed using `npm install`, you can compile your SASS files to plain CSS using [Gulp](http://gulpjs.com/). The `gulp` command will process the instructions in your `gulpfile.js` file. Typically, your compiled CSS will be placed in the `public/css` directory:
+Once the dependencies have been installed using `npm install`, you can compile your SASS files to plain CSS using [Laravel Mix](/docs/{{version}}/mix#working-with-stylesheets). The `npm run dev` command will process the instructions in your `webpack.mix.js` file. Typically, your compiled CSS will be placed in the `public/css` directory:
 
-    gulp
+    npm run dev
 
-The default `gulpfile.js` included with Laravel will compile the `resources/assets/sass/app.scss` SASS file. This `app.scss` file imports a file of SASS variables and loads Bootstrap, which provides a good starting point for most applications. Feel free to customize the `app.scss` file however you wish or even use an entirely different pre-processor by [configuring Laravel Elixir](/docs/{{version}}/elixir).
+The default `webpack.mix.js` included with Laravel will compile the `resources/assets/sass/app.scss` SASS file. This `app.scss` file imports a file of SASS variables and loads Bootstrap, which provides a good starting point for most applications. Feel free to customize the `app.scss` file however you wish or even use an entirely different pre-processor by [configuring Laravel Mix](/docs/{{version}}/mix).
 
 <a name="writing-javascript"></a>
 ## Writing JavaScript
@@ -44,11 +44,11 @@ All of the JavaScript dependencies required by your application can be found in
 
 By default, the Laravel `package.json` file includes a few packages such as `vue` and `axios` to help you get started building your JavaScript application. Feel free to add or remove from the `package.json` file as needed for your own application.
 
-Once the packages are installed, you can use the `gulp` command to [compile your assets](/docs/{{version}}/elixir). Gulp is a command-line build system for JavaScript. When you run the `gulp` command, Gulp will execute the instructions in your `gulpfile.js` file:
+Once the packages are installed, you can use the `npm run dev` command to [compile your assets](/docs/{{version}}/mix). Webpack is a module bundler for modern JavaScript applications. When you run the `npm run dev` command, Webpack will execute the instructions in your `webpack.mix.js` file: 
 
-    gulp
+    npm run dev
 
-By default, the Laravel `gulpfile.js` file compiles your SASS and the `resources/assets/js/app.js` file. Within the `app.js` file you may register your Vue components or, if you prefer a different framework, configure your own JavaScript application. Your compiled JavaScript will typically be placed in the `public/js` directory.
+By default, the Laravel `webpack.mix.js` file compiles your SASS and the `resources/assets/js/app.js` file. Within the `app.js` file you may register your Vue components or, if you prefer a different framework, configure your own JavaScript application. Your compiled JavaScript will typically be placed in the `public/js` directory.
 
 > {tip} The `app.js` file will load the `resources/assets/js/bootstrap.js` file which bootstraps and configures Vue, Vue Resource, jQuery, and all other JavaScript dependencies. If you have additional JavaScript dependencies to configure, you may do so in this file.
 
@@ -67,6 +67,6 @@ To use the component in your application, you may simply drop it into one of you
         <example></example>
     @endsection
 
-> {tip} Remember, you should run the `gulp` command each time you change a Vue component. Or, you may run the `gulp watch` command to monitor and automatically recompile your components each time they are modified.
+> {tip} Remember, you should run the `npm run dev` command each time you change a Vue component. Or, you may run the `npm run watch` command to monitor and automatically recompile your components each time they are modified.
 
 Of course, if you are interested in learning more about writing Vue components, you should read the [Vue documentation](https://vuejs.org/guide/), which provides a thorough, easy-to-read overview of the entire Vue framework.