Changes

*with PIR sensor - http://www.raspberrypi.org/learning/parent-detector/

===mmal opencv modetect===

*with motion detection opencv - http://www.sodnpoo.com/posts.xml/raspberrypi_camera_with_opencv_motion_detection_and_recording.xml

*https://github.com/sodnpoo/rpi-mmal-opencv-modetect