added resources: pocketcode step-by-step tutorial (scanner app)

it's a step-by-step tutorial to create the pocketcode "scanner" app i showed in the schoolnet meeting at CodeWeek ambassador meetup 2016 in Bruxelles.

resources/index.html

@@ -64,7 +64,7 @@ <h2>Coding for younger beginners</h2>
 	<li><strong><a href="https://coderdojo.com" target="_blank">CoderDojo</a></strong>: The CoderDojo website features a variety of information for parents, kids and volunteers looking to start their own coding club for children. Part of the website is also a list of <a href="http://kata.coderdojo.com/wiki/Main_Page" target="_blank">resources</a> that can be used to teach a variety of programming languages to different age groups.</li>
 	<li><strong><a href="https://www.robomindacademy.com/" target="_blank">RoboMind Academy</a></strong>: By programming a virtual robot, the student is introduced to logic, automation and technology. Available as an online educator-friendly platform that can be used with students aged 8 years or older. A good start is the <a href="https://www.robomindacademy.com//go/navigator/coursedetails?course=HourOfCode" target="_blank">Hour of Code Tutorial</a>.</li>
 	<li><strong><a href="https://www.allcancode.com" target="_blank">Run Marco!</a></strong>: an adventure game for kids that teaches the basic of coding. Available as a browser game and an <a href="https://play.google.com/store/apps/details?id=com.allcancode.runmarco" target="_blank">Android app</a>, already translated in 13 European languages (more coming soon).</li>
-	<li><strong><a href="https://pocketcode.org" target="_blank">Pocket Code</a></strong>: An Android app that allows you to create your own games, animations, interactive music videos, and other kinds of apps, directly on your phone or tablet. An easy way to get started is the <a href="https://pocketcode.org/hourOfCode" target="_blank">Skydiving Steve</a> hour of code tutorial.</li>
+	<li><strong><a href="https://pocketcode.org" target="_blank">Pocket Code</a></strong>: An Android app that allows you to create your own games, animations, interactive music videos, and other kinds of apps, directly on your phone or tablet. An easy way to get started is the <a href="https://pocketcode.org/hourOfCode" target="_blank">Skydiving Steve</a> hour of code tutorial. Or you can follow Horst's <a href="http://spielend-programmieren.at/blog/20161008_scannerapp.html">step-by-step tutorial</a> to transform your smartphone into an scanner for alien lifeforms.</li>
 	<li><strong><a href="http://www.kodugamelab.com/" target="_blank">Kodu</a></strong>: Kodu lets kids create games via a simple visual programming language. Kodu can be used to teach creativity, problem solving, storytelling, as well as programming. Available for Windows computers.</li>
 	<li><strong><a href="https://www.playcodemonkey.com" target="_blank">CodeMonkey</a></strong>: CodeMonkey is a fun online game that teaches you how to code. In this free technology and STEM game, students learn about computer coding concepts like functions and loops by programming a monkey to find bananas! Real world programming language. Write code. Catch bananas. Save the world.</li>
 	<li><strong><a href="http://codeweek.it/codyroby/" target="_blank">CodyRoby</a></strong>: Unplugged games and activities.</li>