Updates the README adding information about the CC messages.

README.md

@@ -3,7 +3,9 @@ teensy-braids
 
 A port of the Mutable Instruments Braids to the Teensy board
 
-This project extracts the Mutable Instruments Braids macro oscillator and uses the analog output of the teensy as audio output.
+This project extracts the Mutable Instruments Braids macro oscillator and uses the analog output (pin A14) of the teensy as audio output.
+
+Once flashed, the Teensy receives MIDI-USB messages. The oscillator produces sound continuously and it changes the pitch based on the note-on message. The oscillator type, color and timbre are controlled with the messages CC32, CC33 and CC34 respectively.
 
 You can find the code in the main.cpp file.
 
@@ -22,3 +24,4 @@ then use make
 ```
 $ make
 ```
+this will automatically open the Teensy loader program.