fix Poffer entry

* depends on a third-party network service ⚠
 * Change platform to Nodejs as per https://github.com/Zhouzi/Poffer#installation
 * fixes for WTFDYUM - also depends on a third-party service
 * ref https://github.com/Kickball/awesome-selfhosted/pull/739

README.md

@@ -121,12 +121,12 @@ _Business Intelligence_
   * [Medusa](https://github.com/pymedusa/SickRage) - Automatic Video Library Manager for TV Shows. It watches for new episodes of your favorite shows, and when they are posted it does its magic. `GPLv3` `Python`
   * [Node RED](http://nodered.org/) - A 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` `Nodejs`
   * [openHAB](http://www.openhab.org) - Vendor and technology agnostic open source software for home automation. ([Source Code](https://github.com/openhab/openhab)) `EPLv1` `Java`
-  * [Poffer](http://poffer.gabinaureche.com) - A tool that makes it easier to share the content you like thanks to Pocket+Buffer. ([Source Code](https://github.com/Zhouzi/Poffer)) `MIT` `JavaScript`
+  * [Poffer](http://poffer.gabinaureche.com) `⚠` - A tool that makes it easier to share the content you like thanks to Pocket+Buffer. ([Source Code](https://github.com/Zhouzi/Poffer)) `MIT` `Nodejs`
   * [RSS-Bridge](https://github.com/sebsauvage/rss-bridge) - rss-bridge is a PHP project capable of generating ATOM feeds for websites which don't have one. `Public domain` `PHP`
   * [SickRage](http://sickrage.github.io/) - SickRage is an automatic Video Library Manager for TV Shows. Automatic torrent/nzb searching, downloading, and processing at the qualities you want. ([Source Code](https://github.com/SickRage/SickRage/)) `GPLv3` `Python`
   * [Sonarr](https://sonarr.tv/) - An automatic TV Shows downloader and manager for Usenet and BitTorrent. It can grab, sort and rename new episodes and automatically upgrade the quality of files already downloaded when a better quality format becomes available. ([Source Code](https://github.com/Sonarr/Sonarr)) `GPLv3` `C#`
   * [TriggerHappy](http://trigger-happy.eu/) - An opensource clone of IFTTT, a bridge between your internet services. ([Source Code](https://github.com/foxmask/django-th)) `BSD` `Python`
-  * [WTFDYUM](https://github.com/jchampemont/WTFDYUM) a.k.a Why The Fuck Did You Unfollow Me - Find out who stops following you on Twitter. ([Demo](https://www.wtfdyu.me/), [Source Code](https://github.com/jchampemont/WTFDYUM)) `Apache` `Java`
+  * [WTFDYUM](https://github.com/jchampemont/WTFDYUM) `⚠` - Why The Fuck Did You Unfollow Me - Find out who stops following you on Twitter. ([Demo](https://www.wtfdyu.me/), [Source Code](https://github.com/jchampemont/WTFDYUM)) `Apache` `Java`
   * [Zenbot 3](https://s8f.org/zenbot.html) - Zenbot is a lightweight, extendable, artificially intelligent trading bot for Bitcoin, Ether, Litecoin, and more. ([Demo](https://zenbot.s8f.org/), [Source Code](https://github.com/carlos8f/zenbot)) `MIT` `Node.js`