Microsoft face (#1876)

* Microsoft Face

* Add platform doku

source/_components/microsoft_face.markdown

@@ -0,0 +1,78 @@
+---
+layout: page
+title: "Microsoft Face"
+description: "Instructions how to integrate Microsoft Face component into Home Assistant."
+date: 2017-01-25 00:00
+sidebar: true
+comments: false
+sharing: true
+footer: true
+logo: microsoft.png
+ha_category: Hub
+ha_release: "0.37"
+---
+
+The `microsoft_face` component platform is the main component for Microsoft Azure Cognitive service [Face](https://www.microsoft.com/cognitive-services/en-us/face-api). All data are in a own private instance in the azure cloud.
+
+You need an API key which is free but requires a [Azure registration](https://azure.microsoft.com/de-de/free/) with your microsoft ID. The free resource (*F0*) is limit to 30K request in a month and 20 per minute. If you don't want use a azure cloud, you can also get a API key with registration on [cognitive-services](https://www.microsoft.com/cognitive-services/en-us/subscriptions) but they need to recreate all 90 days.
+
+To enable the Microsoft Face component, add the following lines to your `configuration.yaml`:
+
+```yaml
+# Example configuration.yaml entry
+microsoft_face:
+  api_key: YOUR_API_KEY
+```
+
+Configuration variables:
+
+- **api_key** (*Required*): The API key for your Cognitive resource.
+- **timeout** (*Optional)*: Set timeout for api connection (default 10sec).
+
+### {% linkable_title Person and Groups %}
+
+For most of service you need set a group or a person. So it process and detect only stuff they will given with this group. Home-Assistent create for all group a entity and allow your to show the state, person and IDs inside UI.
+
+For manage this feature you have following services they can call with UI, script or rest api.
+
+- *microsoft_face.create_group*
+- *microsoft_face.delete_group*
+```yaml
+service: microsoft_face.create_group
+data:
+  name: 'Family'
+```
+
+- *microsoft_face.create_person*
+- *microsoft_face.delete_person*
+```yaml
+service: microsoft_face.create_person
+data:
+  group: family
+  name: 'Hans Maier'
+```
+
+We need add image to a person. We can add multiple image for every person to make the detection better. We can take a picture from a camera or send a local image to our azure resource.
+
+- *microsoft_face.face_person*
+```yaml
+service: microsoft_face.face_person
+data:
+  group: family
+  name: 'Hans Maier'
+  camera_entity: camera.door
+```
+
+For the local image we need *curl*. The personId is present in group entity as attribute.
+
+```bash
+curl -v -X POST "https://westus.api.cognitive.microsoft.com/face/v1.0/persongroups/{GroupName}/persons/{personId}/persistedFaces" -H "Ocp-Apim-Subscription-Key: {ApiKey}" -H "Content-Type: application/octet-stream" --data "@/tmp/image.jpg"
+```
+
+After we done with changes on a group, we need train this group to make our AI fit to handle the new data.
+
+- *microsoft_face.train_group*
+```yaml
+service: microsoft_face.train_group
+data:
+  group: family