divided a method into an appropriate classes
move cv::split to core class
standardize style
change only comment
Merge remote-tracking branch 'lakim/findcontours' into individual

Conflicts:
	gem/lib/project/motioncv.rb
	modules/motion/include/opencv2/motion/MotionCV_imgproc.h
	modules/motion/src/MotionCV.mm
Merge branch 'individual' into motioncv

Conflicts:
	gem/lib/project/motioncv.rb
	modules/motion/src/MotionCV.mm