docs: add link to app deployed on gh-pages to readme

Signed-off-by: Christopher Arndt <chris@chrisarndt.de>

Author: SpotlightKid

README.md

@@ -10,9 +10,14 @@ Connect the Flow 8 via USB to your computer and turn it on. Run a local HTTP(S)
 [httplz] on a free port, e.g. 8000) serving the root directory of this repository and open a
 browser at e.g. `http://localhost:8000/`.
 
-The Flow 8 MIDI device should be detected automatically and the browswer will ask your confirmation
+Or you can use the latest version deployed at:
+
+    https://spotlightkid.github.io/flow8-web-midi-control/
+
+The Flow 8 MIDI device should be detected automatically and the browser will ask your confirmation
 for accesing MIDI devices.
 
+
 ## Screenshot
 
 <img src="docs/flow8-web-midi-control-v27.jpg" width="800">