Added changing lane decision
Merge branch 'master' of https://github.com/eordano/itba-ss-2014a

Conflicts:
	test.py
Added instant changing lane.
Merge branch 'master' of https://github.com/eordano/itba-ss-2014a

Conflicts:
	bus.py
	control.py
	main.py
Changed exlusive lanes.