Add Brunt cover docs (#5604)

* added Brunt cover docs

* updated version and added logo image

* Updated version to .74

* incremented HA version

* small changes

source/_components/cover.brunt.markdown

@@ -0,0 +1,47 @@
+---
+layout: page
+title: Brunt Cover
+description: "Instructions on how to set up Brunt Blind Engine within Home Assistant."
+date: 2018-06-24 14:36
+sidebar: true
+comments: false
+sharing: true
+footer: true
+logo: brunt.png
+ha_category: Cover
+ha_release: 0.75
+ha_iot_class: "Cloud Polling"
+---
+
+The `brunt` platform allows one to control Blind Engines by [Brunt](https://www.brunt.co). To use this sensor, you need a Brunt App Account. All Brunt Blind devices registered to your account are automatically added to your Home Assistant with the names given them through the Brunt app.
+
+## {% linkable_title Configuration %}
+
+To enable this integration, add the following lines to your `configuration.yaml`:
+
+```yaml
+cover:
+  - platform: brunt
+    username: BRUNT_USERNAME
+    password: BRUNT_PASSWORD
+```
+
+{% configuration %}
+name:
+  description: Cover name
+  required: false
+  default: "brunt blind engine"
+  type: string
+username:
+  description: Account username of your Brunt app
+  required: true
+  type: string
+password:
+  description: Account password of your Brunt app
+  required: true
+  type: string
+{% endconfiguration %}
+
+<p class='note warning'>
+This component is not affiliated with Brunt and retrieves data from the endpoints of the mobile application. Use at your own risk.
+</p>