readme wiki

Author: sebastianrosenzweig

README.md

@@ -5,10 +5,13 @@ Pytch - A Real-Time Pitch Analysis Tool For Polyphonic Music
 
 ![screenshot](pictures/screenshot.png)
 
-## Demo
+## Demo & Wiki
 
 If you want to see `pytch` in action, watch our [demo video](https://youtu.be/LPt83Wqf2e4).
 
+Please have a look at our [wiki](https://github.com/pytchtracking/pytch/wiki) for an explanation of the GUI.
+
+
 ## Download and Installation
 
 Clone the project