feat: global components (#164)

* feat(lib): register nuxt components:dirs hook

* chore(deps): use nuxt v2.13.x

* chore(example): use global components

* chore(docs): use global components

* docs: add section about global components

* Update docs/package.json

Co-authored-by: Sébastien Chopin <seb@nuxtjs.com>

* docs: update global components

* Update writing.md

* chore: remove commitlint

* docs: update deps

* chore(deps): update

* chore(github): add ci on dev branch

Co-authored-by: Sébastien Chopin <seb@nuxtjs.com>

docs/content/en/writing.md

@@ -19,7 +19,7 @@ content/
   home.md
 ```
 
-This module will parse `.md`, `.yaml`, `.yml`, `.csv`, `.json`, `.json5`, `.xml` files and generate the following properties:
+This module will parse `.md`, `.yaml`, `.yml`, `.csv`, `.json`, `.json5` files and generate the following properties:
 
 - `dir`
 - `path`
@@ -164,7 +164,7 @@ http.createServer((req, res) => {
 
 After rendering with the `nuxt-content` component, it will look like this:
 
-```html[server.js]
+```html
 <div class="nuxt-content-highlight">
   <span class="filename">server.js</span>
   <pre class="language-js" data-line="1,3-5">
@@ -177,7 +177,7 @@ After rendering with the `nuxt-content` component, it will look like this:
 
 > Line numbers are added to the `pre` tag in `data-line` attribute.
 
-> The filename will be converted to a span with a `filename` class, it's up to you to style it. Take a look at this documentation, on the top right of code blocks.
+> The filename will be converted to a span with a `filename` class, it's up to you to style it. Take a look at this documentation, on the top right on code blocks.
 
 ### Syntax highlighting
 
@@ -315,7 +315,7 @@ However, you cannot render
 
 #### Global components
 
-Since **v1.4.0** and Nuxt **v2.13.0**, you can now put your components in `components/global/` directory so you don't have to import them in your pages.
+Since **v2.0.0** and Nuxt **v2.13.0**, you can now put your components in `components/global/` directory so you don't have to import them in your pages.
 
 ```bash
 components/
@@ -428,7 +428,7 @@ Will be transformed into:
   "dir": "/",
   "slug": "home",
   "path": "/home",
-  "extension": ".csv",
+  "extension": ".json",
   "body": [
     {
       "title": "Home",
@@ -438,51 +438,6 @@ Will be transformed into:
 }
 ```
 
-## XML
-
-XML will be parsed
-
-### Example
-
-A file `content/home.xml`:
-
-```xml
-<xml>
-  <item prop="abc">
-    <title>Title</title>
-    <description>Hello World</description>
-  </item>
-</xml>
-```
-
-Will be transformed into:
-
-```json
-{
-  "dir": "/",
-  "slug": "home",
-  "path": "/home",
-  "extension": ".xml",
-  "body": {
-    "xml": {
-      "item": [
-        {
-          "$": {
-            "prop": "abc"
-          },
-          "title": [
-            "Title"
-          ],
-          "description": [
-            "Hello World"
-          ]
-      }
-    ]
-  }
-}
-```
-
-
 ## YAML / YML
 
 Data defined will be injected into the document.