added link to vvvv/VL implementation

Author: joreg

readme.md

@@ -79,8 +79,8 @@ Most of the time you will be interacting with Arduino with a client library on t
   * [https://www.wolfram.com/system-modeler/libraries/model-plug/](https://www.wolfram.com/system-modeler/libraries/model-plug/)
 * Go
   * [https://github.com/kraman/go-firmata](https://github.com/kraman/go-firmata)
-* vvvv
-  * [https://vvvv.org/blog/arduino-second-service](https://vvvv.org/blog/arduino-second-service)
+* vvvv/VL
+  * [https://github.com/vvvv/VL.IO.Firmata](https://github.com/vvvv/VL.IO.Firmata)
 * openFrameworks
   * [http://openframeworks.cc/documentation/communication/ofArduino/](http://openframeworks.cc/documentation/communication/ofArduino/)
 * Rust