link to tekthing mention

tekthing mentioned us again as one of 5 easy projects for the Raspberry Pi.

README.md

@@ -42,6 +42,7 @@ reddit: [/r/pihole](https://www.reddit.com/r/pihole/)
 - [Minibian Pi-hole](http://munkjensen.net/wiki/index.php/See_my_Pi-Hole#Minibian_Pi-hole)
 
 ## Coverage
+- [TekThing: 5 fun, easy projects for a Raspberry Pi](https://youtu.be/QwrKlyC2kdM?t=1m42s)
 - [Pi-hole on Adafruit's blog](https://blog.adafruit.com/2016/03/04/pi-hole-is-a-black-hole-for-internet-ads-piday-raspberrypi-raspberry_pi/)
 - [The Defrag Show - MSDN/Channel 9](https://channel9.msdn.com/Shows/The-Defrag-Show/Defrag-Endoscope-USB-Camera-The-Final-HoloLens-Vote-Adblock-Pi-and-more?WT.mc_id=dlvr_twitter_ch9#time=20m39s)
 - [MacObserver Podcast 585](http://www.macobserver.com/tmo/podcast/macgeekgab-585)