add a note for OpenCV 3.2 configure to ensure we get the recognizer compiled and exposed
add a note for OpenCV 3.2 configure to ensure we get the recognizer compiled and exposed

akshonesports/node-opencv,peterbraden/node-opencv,piercus/node-opencv,akshonesports/node-opencv,peterbraden/node-opencv,piercus/node-opencv,akshonesports/node-opencv,akshonesports/node-opencv,akshonesports/node-opencv,akshonesports/node-opencv,piercus/node-opencv,piercus/node-opencv,piercus/node-opencv,peterbraden/node-opencv,peterbraden/node-opencv,akshonesports/node-opencv,piercus/node-opencv