Added doc for Atome sensor

source/_components/atome.markdown

@@ -0,0 +1,41 @@
+---
+title: "Atome Linky Sensor"
+description: "Integrate Atome Linky consumption data within Home Assistant."
+logo: total_direct_energie.png
+ha_release: 0.99
+ha_category:
+  - Energy
+  - Sensor
+ha_iot_class: Cloud Polling
+---
+
+The `atome` sensor platform is retrieving the consumption of your home from the [Direct Energy Atome electric meter](https://total.direct-energie.com/particuliers/electricite/compteur-linky/atome).
+This special little device is connected to a Linky Electric Meter, and sends live data to a cloud platform.
+
+As there is no official documentation for the API, the component retrieves data from the API used in the Atome mobile app, [hosted here](http://esoftlink.esoftthings.com).
+
+## Configuration
+
+To use it, you need to order the device directly from "Total Direct Energie" Mobile App. Then you need to follow up the installation (covered in the Atome App).
+The configuration (see below) needs your Atome username & password you created during the initialization of the Atome device.
+
+Next, add the Atome sensor to your `configuration.yaml` file like below:
+
+```yaml
+# Example configuration.yaml entry
+sensor:
+  - platform: atome
+    username: YOUR_ATOME_USERNAME
+    password: YOUR_ATOME_PASSWORD
+```
+
+{% configuration %}
+username:
+  description: The Atome account username.
+  required: true
+  type: string
+password:
+  description: The Atome account password.
+  required: true
+  type: string
+{% endconfiguration %}