cmake HAVE_OPENCV3 examples

lixiny/Handeye-Calibration-ROS src/handeye_calib_marker/CMakeLists.txt :50 

add_definitions(-DHAVE_OPENCV3)

lixiny/Handeye-Calibration-ROS src/handeye_calib_marker/CMakeLists.txt :51 

message(STATUS "defined HAVE_OPENCV3")