Add SmartThings Light platform (#8365)

* Add SmartThings Light platform docs

* Minor tweaks

* Specify the classic ST mobile app

* Updated ha_version

source/_components/smartthings.light.markdown

@@ -0,0 +1,27 @@
+---
+layout: page
+title: "SmartThings Light"
+description: "Instructions on setting up Samsung SmartThings lights within Home Assistant."
+date: 2018-01-30 00:00
+sidebar: true
+comments: false
+sharing: true
+footer: true
+logo: samsung_smartthings.png
+ha_category: Light
+ha_release: "0.87"
+ha_iot_class: "Cloud Push"
+---
+
+The SmartThings light platform lets you control Samsung SmartThings connected devices that have light-control related capabilities.
+
+| Capability        |Light Features
+|-------------------|------------------------------------------------------------|
+| [`switchLevel`](https://smartthings.developer.samsung.com/develop/api-ref/capabilities.html#Switch-Level)            | `brightness` and `transition`
+| [`colorControl`](https://smartthings.developer.samsung.com/develop/api-ref/capabilities.html#Color-Control)            | `color`
+| [`colorTemperature`](https://smartthings.developer.samsung.com/develop/api-ref/capabilities.html#Color-Temperature)            | `color_temp`
+
+For a SmartThings device to be represented by the light platform, it must have one or more of the capabilities above in addition to the [`switch`](https://smartthings.developer.samsung.com/develop/api-ref/capabilities.html#Switch) capability.
+
+<p class='note'>
+Entities for this platform are loaded automatically when you configure the [SmartThings component](/components/smartthings). This platform cannot be manually configured.</p>

source/_components/smartthings.markdown

@@ -59,7 +59,7 @@ The SmartThings component is configured exclusively through the front-end. Manua
 1. From the Home Assistant front-end, navigate to 'Configuration' then 'Integrations'. Under 'Set up a new integration' locate 'SmartThings' and click 'Configure'.
 2. Enter the personal access token created above and click 'Submit'
 3. When prompted, install the SmartApp:
-    1. Open the SmartThings mobile app. Navigate to 'Automation' and select the 'SmartApps' tab.
+    1. Open the SmartThings Classic mobile app. Navigate to 'Automation' and select the 'SmartApps' tab.
     2. Click 'Add a SmartApp', scroll to the bottom, and select 'My Apps', then choose 'Home Assistant'.
     3. Optionally change the display name and press 'Done'
     4. Authorize the app by pressing 'Allow'
@@ -75,8 +75,9 @@ Advanced: If you have multiple locations in SmartThings, each can be integrated
 
 SmartThings represents devices as a set of [capabilities](https://smartthings.developer.samsung.com/develop/api-ref/capabilities.html) and the SmartThings component follows the following rules to represent those as entities in Home Assistant:
 
-| Capability        |Platform
+| Capabilities        |Platform
 |-------------------|------------------------------------------------------------|
-| [switch](https://smartthings.developer.samsung.com/develop/api-ref/capabilities.html#Switch)            | [switch](/components/smartthings.switch)
+| `switchLevel`, `colorControl` and `colorTemperature`    | [light](/components/smartthings.light)
+| `switch`          | [switch](/components/smartthings.switch)
 
 Support for additional capabilities will be added in the future.