Updated header to show it with help.

applications/apertif/matlab/FIR_LPF_ApertifCF.m

applications/apertif/matlab/bsn_source.m

applications/apertif/matlab/dt.m

applications/apertif/matlab/fringe.m

applications/apertif/matlab/fringe_stopping.m

applications/apertif/matlab/pfft.m

applications/apertif/matlab/pfir.m

applications/apertif/matlab/pfir_coeff.m

applications/apertif/matlab/phase_tracking.m

applications/apertif/matlab/quantize.m

applications/apertif/matlab/run_pfir_coeff.m

applications/apertif/matlab/spec.m

applications/apertif/matlab/try_quantize.m

applications/apertif/matlab/try_uencode.m

applications/apertif/matlab/wg.m