Velocity2D → Airfoil2D Relation

File in VM2D/Velocity2D	Includes file in VM2D/Airfoil2D
OptimizedVelocity2D.cpp	Airfoil2D.h
Velocity2D.cpp	Airfoil2D.h
Velocity2DBarnesHut.cpp	Airfoil2D.h
Velocity2DBiotSavart.cpp	Airfoil2D.h