implemeted blinkers

allowed.mac

forbidden.mac

include/VKBlinkers.hh

include/VKDetectorConstruction.hh

include/VKDetectorMessenger.hh

src/VKBlinkers.cpp

src/VKDetectorConstruction.cpp

src/VKDetectorMessenger.cpp

src/VKMagnet.cpp

test/VKDetectorTest.cpp

vis.mac