Adding in docs for Vultr platform and sensors (#3663)

* Added Vultr logo

* Added v1 Vultr hub

* Added init sensor docs for Vultr

* Updated Vultr components to next version

* Updating Vultr components

* Added more details to vultr sensors

* Updated Vultr component docs

* Corrected Vultr name default values, added vultr sensor {} name option

source/_components/vultr.markdown

@@ -0,0 +1,35 @@
+---
+layout: page
+title: "Vultr"
+description: "Instructions on how to integrate Vultr within Home Assistant."
+date: 2017-10-17 21:00
+sidebar: true
+comments: false
+sharing: true
+footer: true
+featured: false
+ha_category: Hub
+ha_release: "0.57"
+logo: vultr.png
+ha_iot_class: "Cloud Polling"
+---
+
+
+The `vultr` component allows you to access information about and interact with your [Vultr](https://www.vultr.com) subscriptions (Virtual Private Servers) from Home Assistant.
+
+Obtain your API key from your [Vultr Account](https://my.vultr.com/settings/#settingsapi).
+
+<p class='note'>
+Ensure you allow the public IP of Home Assistant under the Access Control heading.
+</p>
+
+To integrate your Vultr subscriptions with Home Assistant, add the following section to your `configuration.yaml` file:
+
+```yaml
+vultr:
+  api_key: ABCDEFG12345
+```
+
+Configuration variables:
+
+- **api_key** (*Required*): Your Vultr API key.