Add guide to program a rpi0 over USB (thibmaek#10)

Author: pgaxatte

README.md

@@ -66,6 +66,7 @@ Contributions *very welcome* but first see [Contributing](#contributing)
 * [Pi-hole](https://pi-hole.net/) - A black hole for internet ads.
 * [Limelight: Who needs a Steam machine when you have a pi?](https://www.raspberrypi.org/blog/limelight-who-needs-a-steam-machine-when-you-have-a-pi/) - Blogpost about the Nvidia in-house streaming service Limelight running on a Raspberry Pi.
 * [Planning lunch with a Slackbot on resin.io](https://resin.io/blog/planning-lunch-with-a-slackbot-on-resin-io/) - Nodejs Slackbot that runs on a Raspberry Pi hosted on Resin.
+* [Raspberry Pi Zero: Programming over USB](http://blog.gbaman.info/?p=791) - A guide to boot and access a Raspberry Pi Zero over a USB cable without need of an ethernet/wifi connection, keyboard or screen.
 
 ## Contributing
 Contribution guidelines can be found [here](/CONTRIBUTING.md)