fixed position pointers
small changes...ready to clean up integrator
overlap and kinetic class added...references work fine
kinetic integral in new class...works fine
nuclear attraction class added...tests pass
added electronRepulsionIntegral class...all standard tests works..GD
next
overlapGD added...overlapGD tests pass
kineticGD class created...all tests passed
added nuclearattractionintegralGD
some renaming of functions
h derivative function in system added
renaming in system class...from pqrs to abcd
added electronrepulsionintegralGD...all functions are implemented..need
tests
finally done with clean up of integrator...all tests runs