Documentation for Epson projector support in HA (#5005)

* Added Epson logo

* epson projector documentation

* config section fixed

* removed feature key from header

* fixed missing :

* added info about supported device

* changes according to @dthulke review

* 🚀 Trigger rebuild

* ⬆️ ha_release -> 0.68

* update according to Epson module code and reviews

source/_components/media_player.epson.markdown

@@ -0,0 +1,63 @@
+---
+layout: page
+title: "Epson"
+description: "Instructions on how to integrate Epson projector into Home Assistant."
+date: 2018-06-13 15:00
+sidebar: true
+comments: false
+sharing: true
+footer: true
+logo: epson.png
+ha_category: Media Player
+ha_release: 0.72
+ha_iot_class: "Local Polling"
+---
+
+The `epson` platform allows you to control a Epson projector from Home Assistant.
+
+To add Epson to your installation, add the following to your `configuration.yaml` file:
+
+```yaml
+# Example configuration.yaml entry
+media_player:
+  - platform: epson
+    host: 192.168.0.123
+```
+
+{% configuration %}
+host:
+  description: The host name or address of the Epson projector
+  required: true
+  type: string
+port:
+  description: The HTTP port number.
+  required: false
+  type: int
+  default: 80
+name:
+  description: The name of the device used in the frontend.
+  required: false
+  type: string
+  default: 'EPSON Projector'
+ssl:
+  description: Enable SSL. **Feature not tested.**
+  required: false
+  type: bool
+  default: false
+{% endconfiguration %}
+
+Supported features of Epson projector:
+- turn on/off
+- set input
+- set/get color mode
+- increase/decrease volume
+- mute/unmute audio
+- send next/previous track
+
+Supported devices:
+- Epson projectors supporting ESC/VP21 protocol.
+
+Tested devices:
+- Epson EH-TW5350
+
+To make this module work you need to connect your projector to your LAN. The best is to use iProjection app by Epson to test if it is working.