add initial NuHeat documentation

source/_components/nuheat.markdown

@@ -0,0 +1,43 @@
+---
+layout: page
+title: "NuHeat"
+description: "Instructions how to integrate your NuHeat Signature thermostats within Home Assistant."
+date: 2017-11-11 18:00
+sidebar: true
+comments: false
+sharing: true
+footer: true
+logo: nuheat.png
+ha_category: Hub
+ha_release: 0.53
+ha_iot_class: "Cloud Polling"
+---
+
+The `nuheat` component lets you control connected floor heating thermostats from [NuHeat](http://www.nuheat.com/).
+
+First, you will need to obtain your thermostat's numeric serial number or ID by logging into [MyNuHeat.com](https://mynuheat.com/) and selecting your thermostat(s).
+
+Once you have the Thermostat ID(s), add the following information to your `configuration.yaml` file:
+
+```yaml
+# Example configuration.yaml entry
+nuheat:
+  username: you@example.com
+  password: very-secure-password
+  devices: 12345
+
+# Example configuration.yaml entry with multiple thermostats
+nuheat:
+  username: you@example.com
+  password: very-secure-password
+  devices:
+    - 12345
+    - 67890
+```
+
+Configuration variables:
+
+- **username** (*Required*): The username for accessing your MyNuHeat account.
+- **password** (*Required*): The password for accessing your MyNuHeat account.
+- **devices** (*Required*): The serial number / ID of each thermostat you would like integrate with Home Assistant.
+