Change nzbget to full component (#10300)

* Change nzbget to full component

* Document creating nzbget sensors by default.

source/_components/nzbget.markdown

@@ -12,17 +12,16 @@ redirect_from:
 
 The `nzbget` platform will allow you to monitor your downloads with [NZBGet](http://NZBGet.net) from within Home Assistant and setup automation based on the information.
 
-To use NZBGet with your installation, add the following to your `configuration.yaml` file:
+## Configuration
+
+To enable this component, add the following to your `configuration.yaml`:
 
 ```yaml
 # Example configuration.yaml entry
-sensor:
-  platform: nzbget
+nzbget:
   host: YOUR_NZBGET_HOST
-  monitored_variables:
-    - article_cache
-    - download_rate
-    - download_paused
+  username: YOUR_NZBGET_USERNAME
+  password: YOUR_NZBGET_PASSWORD
 ```
 
 {% configuration %}
@@ -53,27 +52,18 @@ password:
   required: false
   type: string
   description: The password to access your NZBGet installation.
-monitored_variables:
-  required: true
-  type: list
-  description: List of monitored details.
-  keys:
-    article_cache:
-      description: Number of cached articles.
-    average_download_rate:
-      description: Average download rate
-    download_paused:
-      description: Paused downloads
-    download_rate:
-      description: Current download rate
-    download_size:
-      description: The size to download
-    free_disk_space:
-      description: Free disk space at the storage location of NZBGet
-    post_paused:
-      description: Paused posts
-    remaining_size:
-      description: Remaining size to download
-    uptime:
-      description: Uptime of NZBGet
 {% endconfiguration %}
+
+## Sensor
+
+This component will create these sensors:
+
+- `article_cache`: Number of cached articles.
+- `average_download_rate`: Average download rate
+- `download_paused`: Paused downloads
+- `download_rate`: Current download rate
+- `download_size`: The size to download
+- `free_disk_space`: Free disk space at the storage location of NZBGet
+- `post_paused`: Paused posts
+- `remaining_size`: Remaining size to download
+- `uptime`: Uptime of NZBGet