Update README_cnn.md

README_cnn.md

@@ -48,6 +48,7 @@ For this project I am using only the 'letters' dataset.
 
 		python range-detector.py -f HSV -w
 The easiest way to use it is to put the yellow paper in front of the camera and then slowly increasing the lower parameters(H_MIN, V_MIN, S_MIN) one by one and then slowly decreasing the upper parameters (H_MAX, V_MAX, S_MAX). When the adjusting has been done you will find that only the yellow paper will have a corresponding white patch and rest of the image will be dark. 
+
 2. Now run the gesture_action_cnn file.
 
 		python gesture_action_cnn.py