Added checkNNGradients.m
Added checkNNGradients.m

chaitu2289/xray_scattering,chaitu2289/xray_scattering,chaitu2289/xray_scattering,dustinstansbury/medal,chaitu2289/xray_scattering,chaitu2289/xray_scattering,ZenDevelopmentSystems/medal,chaitu2289/xray_scattering