Add openHAB Demo Link

README.md

@@ -897,7 +897,7 @@ _Games, game servers and control panels._
 - [Home Assistant](https://home-assistant.io/) - Open-source home automation platform. ([Demo](https://home-assistant.io/demo/), [Source Code](https://github.com/home-assistant/home-assistant)) `MIT` `Python`
 - [Mozilla Gateway](https://iot.mozilla.org/gateway/) - Mozilla WebThings is Mozilla’s open source implementation of the Web of Things, including the WebThings Gateway and the WebThings framework. ([Source Code](https://github.com/mozilla-iot/gateway)) `MPL-2.0` `NodeJS`
 - [Node RED](http://nodered.org/) - Browser-based flow editor that helps you wiring hardware devices, APIs and online services to create IoT solutions. ([Source Code](https://github.com/node-red/node-red)) `Apache-2.0` `Nodejs`
-- [openHAB](http://www.openhab.org) - Vendor and technology agnostic open source software for home automation. ([Source Code](https://github.com/openhab/openhab)) `EPL-1.0` `Java`
+- [openHAB](http://www.openhab.org) - Vendor and technology agnostic open source software for home automation. ([Demo](http://demo.openhab.org:8080/), [Source Code](https://github.com/openhab/openhab)) `EPL-1.0` `Java`
 - [Thingsboard](https://thingsboard.io/) - Open-source IoT Platform - Device management, data collection, processing and visualization. ([Demo](https://demo.thingsboard.io/signup), [Source Code](https://github.com/thingsboard/thingsboard)) `Apache-2.0` `Java`
 - [Thingspeak](https://thingspeak.com/) - Open source “Internet of Things” application and API to store and retrieve data from things using HTTP. ([Demo](https://thingspeak.com/channels/public), [Source Code](https://github.com/iobridge/thingspeak)) `GPL-3.0` `Ruby`