Adding documentation for Roku hub and remote (#6944)

* Adding documentation for Roku hub and remote

* revert date change

* Fix year

* PR feedback fixes

source/_components/media_player.roku.markdown

@@ -1,6 +1,6 @@
 ---
 layout: page
-title: "Roku"
+title: "Roku Media Player"
 description: "Instructions on how to integrate Roku into Home Assistant."
 date: 2016-05-16 20:0+0000
 sidebar: true
@@ -13,19 +13,4 @@ ha_release: "0.20"
 ha_iot_class: "Local Polling"
 ---
 
-The [Roku](http://www.roku.com/) media players will be automatically discovered if you enable the [discovery component](/components/discovery/).
-
-The `roku` media player platform can also be forced to load by adding the following lines to your `configuration.yaml`:
-
-```yaml
-# Example configuration.yaml entry
-media_player:
-  - platform: roku
-```
-
-{% configuration %}
-host:
-  description: The IP address or the hostname of the device. Use only if you don't want to scan for devices.
-  required: false
-  type: string
-{% endconfiguration %}
+To set up the `roku` media player platform, please follow the instructions on the [Roku Component page](/components/roku/).

source/_components/remote.roku.markdown

@@ -0,0 +1,60 @@
+---
+layout: page
+title: "Roku Remote"
+description: "Instructions on how to integrate Roku into Home Assistant."
+date: 2018-10-17 20:0+0000
+sidebar: true
+comments: false
+sharing: true
+footer: true
+logo: roku.png
+ha_category: Remote
+ha_release: 0.86
+ha_iot_class: "Local Polling"
+---
+ 
+The `roku` remote platform allows you to send remote control buttons to a Roku device. It is automatically set up when a Roku is configured; please see [Roku Component page](/components/roku/) for configuration details.
+ 
+At the moment, the following buttons are supported:
+
+- back
+- backspace
+- channel_down
+- channel_up
+- down
+- enter
+- find_remote
+- forward
+- home
+- info
+- input_av1
+- input_hdmi1
+- input_hdmi2
+- input_hdmi3
+- input_hdmi4
+- input_tuner
+- left
+- literal
+- play
+- power
+- replay
+- reverse
+- right
+- search
+- select
+- up
+- volume_down
+- volume_mute
+- volume_up
+
+A typical service call for pressing several buttons looks like this.
+
+```yaml
+service: remote.send_command
+data:
+  entity_id: remote.roku
+  command:
+    - left
+    - left
+    - select
+```

source/_components/roku.markdown

@@ -0,0 +1,37 @@
+---
+layout: page
+title: "Roku"
+description: "Instructions how to integrate Roku devices into Home Assistant."
+date: 2018-10-17 20:47
+sidebar: true
+comments: false
+sharing: true
+footer: true
+logo: roku.png
+ha_category: Hub
+ha_iot_class: "Local Polling"
+ha_release: 0.86
+---
+
+The [Roku](http://www.roku.com/) component allows integration of Roku [media players](/components/media_player.roku) and [remotes](/components/remote.roku/) which will be automatically discovered if you enable the [discovery component](/components/discovery/).
+
+The `roku` component can also be forced to load by adding the following lines to your `configuration.yaml`:
+
+```yaml
+# Example configuration.yaml entry
+roku:
+  - host: 192.168.1.100
+```
+
+{% configuration %}
+host:
+  description: Set the IP address of the Roku device. Use only if you don't want to autodiscover devices.
+  required: false
+  type: string
+{% endconfiguration %} 
+
+## {% linkable_title Services %}
+
+### {% linkable_title Service `roku_scan` %}
+
+Scans the local network for Rokus. All found devices are presented as a persistent notification.