Adding Garadget Cover documentation (#1311)

* Adding Garadget Cover documentation

* Updating formating to follow command-line style

source/_components/cover.garadget.markdown

@@ -0,0 +1,45 @@
+---
+layout: page
+title: "Garadget Cover"
+description: "Instructions how to integrate Garadget covers within Home Assistant."
+date: 2016-10-24 14:25
+sidebar: true
+comments: false
+sharing: true
+footer: true
+logo: garadget_logo.jpg
+ha_category: Cover
+ha_release: 0.32
+---
+
+
+The `garadget` cover platform lets you control [Garadget](http://www.garadget.com/) garage door futurizers through Home Assistant.
+
+To enable Garadget Covers in your installation, add the following to your `configuration.yaml` file:
+
+```yaml
+# Example configuration.yaml entry
+cover:
+  platform: garadget
+  covers:
+      190028001947343412342341:
+        username:  UseYourLogin@garadget.com
+        password:  abc123
+        name:  Left Garage Door
+      4c003f001151353432134214:
+        access_token: df4cc785ff818f2b01396c44142342fccdef
+```
+
+Configuration variables:
+
+- **covers** array (*Required*): List of your doors.
+  - **device**  (*Required*): This is the device id from your Garadget portal.
+  - Either:
+    - **username** (*Required*): Your Garadget account username.
+    - **device**   (*Required*): Your Garadget account password.
+  - Or: 
+    - **access_token**   (*Required*): A generated access_token from your garadget account
+  - **name** (*Optional*): Name to use in the Frontend, will use name configured in Garadget otherwise.
+
+
+If provided, the **access_token** will be used, otherwise the **username** and **password** will be used to automatically generate an access token at start time.