add document for fan template

source/_components/fan.template.markdown

@@ -0,0 +1,96 @@
+---
+layout: page
+title: "Template Fan"
+description: "Instructions how to setup the Template fans within Home Assistant."
+date: 2018-05-03 09:00
+sidebar: true
+comments: false
+sharing: true
+footer: true
+ha_category: Fan
+ha_release: 0.69
+ha_iot_class: "Local Push"
+logo: home-assistant.png
+---
+
+The `template` platform creates fans that combine components and provides the
+ability to run scripts or invoke services for each of the turn_on, turn_off, set_speed, and
+set_oscillating commands of a fan.
+
+To enable Template Fans in your installation, add the following to your
+`configuration.yaml` file:
+
+{% raw %}
+```yaml
+# Example configuration.yaml entry
+fan:
+  - platform: template
+    fans:
+      bedroom_fan:
+        friendly_name: "Bedroom fan"
+        value_template: "{{ states('input_boolean.state') }}"
+        speed_template: "{{ states('input_select.speed') }}"
+        oscillating_template: "{{ states('input_select.osc') }}"
+        turn_on:
+          service: script.fan_on
+        turn_off:
+          service: script.fan_off
+        set_speed:
+          service: script.fan_speed
+          data_template:
+            speed: "{{ speed }}"
+        set_oscillating:
+          service: script.fan_oscillating
+          data_template:
+            oscillating: "{{ oscillating }}"
+        speeds:
+          - '1'
+          - '2'
+          - '3'
+```
+{% endraw %}
+
+{% configuration %}
+  fans:
+    description: List of your fans.
+    required: true
+    type: map
+    keys:
+      friendly_name:
+        description: Name to use in the frontend.
+        required: false
+        type: string
+      value_template:
+        description: "Defines a template to get the state of the fan. Valid value: 'on'/'off'
+        required: true
+        type: template
+      speed_template:
+        description: Defines a template to get the speed of the fan.
+        required: false
+        type: template
+      oscillating_template:
+        description: Defines a template to get the osc state of the fan. Valid value: True/False
+        required: false
+        type: template
+      turn_on:
+        description: Defines an action to run when the fan is turned on.
+        required: true
+        type: action
+      turn_off:
+        description: Defines an action to run when the fan is turned off.
+        required: true
+        type: action
+      set_speed:
+        description: Defines an action to run when the fan is given a speed command.
+        required: false
+        type: action
+      set_oscillating:
+        description: Defines an action to run when the fan is given a osc state command.
+        required: false
+        type: action
+      speeds:
+        description: List of speeds the fan is capable of running at.
+        required: false
+        type: string list
+        default: ['low', 'medium', 'high']
+{% endconfiguration %}