Ads (#4115)

* add ads hub and switch

* add ads binary sensor

* add ADS sensor

* fix version numbers

* separate configuration tag

* remove device notification config

* fix configuration schema.

* replace tabs with spaces

* add type key-value-pairs

source/_components/sensor.ads.markdown

@@ -0,0 +1,57 @@
+---
+layout: page
+title: "ADS Sensor"
+description: "Instructions how to integrate ADS numeric values into Home Assistant."
+date: 2017-10-25 10:00
+sidebar: true
+comments: false
+sharing: true
+footer: true
+logo: home-assistant.png
+ha_category: Sensor
+ha_release: 0.60
+ha_iot_class: "Local Push"
+---
+
+The `ADS` sensor platform allows reading the value of a numeric variable on
+your ADS device. The variable can be of type *INT*, *UINT* or *BYTE*.
+
+To use your ADS device, you first have to set up your [ADS
+hub](/components/ads/) and then add the following to your `configuration.yaml`
+file:
+
+```yaml
+# Example configuration.yaml entry
+sensor:
+  - platform: ads
+    adsvar: GVL.temperature
+    unit_of_measurement: '°C'
+    adstype: int
+```
+
+Configuration variables:
+
+{% configuration %}
+  adsvar:
+    required: true
+    description: The name of the variable which you want to access
+    type: string
+  adstype:
+    required: false
+    description: The datatype of the ADS variable, possible values are int, uint, byte
+    default: int
+    type: string
+  name:
+    required: false
+    description: An identifier for the sensor
+    type: string
+  factor:
+    required: false
+    description: A factor that divides the stored value before displaying in Home Assistant
+    default: 1
+    type: integer
+{% endconfiguration %}
+
+The *factor* can be used to implement fixed decimals. E.g., set *factor* to 100
+if you want to display a fixed decimal value with two decimals. A variable
+value of `123` will be displayed as `1.23`.