docs(guides) Fix error with filename + npm package. (#1886)

Zicrael · montogeek · commit 2b737d0e1ce4 · 2018-03-27T09:22:55.000+02:00
1) Webpack as default build to file main.js , not on bundle.js. 
2) Add npm install webpack-cli -D to npm install, If you do not do this console throw next: 
======================================================
The CLI moved into a separate package: webpack-cli.
Please install 'webpack-cli' in addition to webpack itself to use the CLI.
-&gt; When using npm: npm install webpack-cli -D
-&gt; When using yarn: yarn add webpack-cli -D
======================================================
So pls fix this, thank`s.
diff --git a/src/content/guides/getting-started.md b/src/content/guides/getting-started.md
@@ -25,6 +25,7 @@ First let's create a directory, initialize npm, [install webpack locally](/guide
 ``` bash
 mkdir webpack-demo && cd webpack-demo
 npm init -y
+npm install --save-dev webpack
 npm install webpack webpack-cli --save-dev
 ```
 
@@ -167,14 +168,14 @@ __dist/index.html__
    </head>
    <body>
 -    <script src="./src/index.js"></script>
-+    <script src="dist/bundle.js"></script>
++    <script src="main.js"></script>
    </body>
   </html>
 ```
 
 In this setup, `index.js` explicitly requires `lodash` to be present, and binds it as `_` (no global scope pollution). By stating what dependencies a module needs, webpack can use this information to build a dependency graph. It then uses the graph to generate an optimized bundle where scripts will be executed in the correct order.
 
-With that said, let's run `npx webpack` with our script as the [entry point](/concepts/entry-points) and `bundle.js` as the [output](/concepts/output). The `npx` command, which ships with Node 8.2 or higher, runs the webpack binary (`./node_modules/.bin/webpack`) of the webpack package we installed in the beginning:
+With that said, let's run `npx webpack` with our script as the [entry point](/concepts/entry-points) and `main.js` as the [output](/concepts/output). The `npx` command, which ships with Node 8.2 or higher, runs the webpack binary (`./node_modules/.bin/webpack`) of the webpack package we installed in the beginning:
 
 ``` bash
 npx webpack
@@ -184,8 +185,8 @@ Version: webpack 4.0.1
 Time: 3003ms
 Built at: 2018-2-26 22:42:11
     Asset      Size  Chunks             Chunk Names
-bundle.js  69.6 KiB       0  [emitted]  main
-Entrypoint main = bundle.js
+main.js  69.6 KiB       0  [emitted]  main
+Entrypoint main = main.js
    [1] (webpack)/buildin/module.js 519 bytes {0} [built]
    [2] (webpack)/buildin/global.js 509 bytes {0} [built]
    [3] ./src/index.js 256 bytes {0} [built]
