Began working on placing Roads. Code is still untested. Roads are added
through interacting with the GameBoard
Added tests for new road functions
Finished tests and implementation of longest road
Finished Commenting the code
Merge remote-tracking branch 'origin/road_implementation' into serialization

Conflicts:
	include/GameBoard.h
	include/Player.h
	include/Road.h
	src/GameBoard.cpp
	src/Road.cpp
	tests/test_GameBoard.cpp