sadsad
Merge branch 'master' of https://github.com/dutchgold92/TrafficSim-cuda

Conflicts:
	TrafficSim-cuda-v2.pro
modified road_link struct and dependant code, to allow a road_link to
connect up to four roads together (at least one origin and one
destination) => less road_links needed, and easier to toggle links
(close/open roads; traffic lights).