Remove Tipboard, add Smashing (#2468)

as per https://github.com/awesome-selfhosted/awesome-selfhosted/issues/2451

README.md

@@ -1234,7 +1234,7 @@ _See also [Monitoring](#monitoring)_
 - [Organizr](https://github.com/causefx/Organizr) - Organizr aims to be your one stop shop for your Servers Frontend. `GPL-3.0` `PHP`
 - [Personal management system](https://github.com/Volmarg/personal-management-system) - Central point for managing personal data (billings, payments, job holidays, notes etc.). ([Demo](http://personal-management-system.pl/)) `MIT` `PHP`
 - [simple-dash](https://github.com/kutyla-philipp/simple-dash) - A simple, fully responsive Dashboard to forward to the services of your choice. ([Demo](https://kutyla-philipp.github.io/simple-dash/)) `MIT` `Javascript`
-- [Tipboard](http://allegro.tech/tipboard/) - In-house, tasty, local dashboarding system. ([Source Code](https://github.com/allegro/tipboard)) `Apache-2.0` `Python`
+- [Smashing](https://smashing.github.io/) - Smashing, the spiritual successor to Dashing, is a Sinatra based framework that lets you build excellent dashboards. It looks especially great on TVs. ([Source Code](https://github.com/Smashing/smashing)) `MIT` `Ruby`
 - [wger](http://wger.de/) - Web-based personal workout, fitness and weight logger/tracker. It can also be used as a simple gym management utility and offers a full REST API as well. ([Demo](http://wger.de), [Source Code](https://github.com/rolandgeider/wger)) `AGPL-3.0` `Python`
 - [Your Spotify](https://github.com/Yooooomi/your_spotify) `⚠` - Allows you to record your Spotify listening activity and have statistics about them served through a Web application. `MIT` `Nodejs/Docker`