The function returns the following information for a kit specified in kits.txt:
Panel name, short kit name (unique, user defined), full kit name (user defined),
marker names, allele names, allele sizes (bp),
minimum allele size, maximum allele size (bp), flag for virtual alleles,
marker color, marker repeat unit size (bp), minimum marker size,
maximum marker, marker offset (bp), flag for sex markers (TRUE/FALSE).
If no matching kit or kit index is found NA is returned.
If kit='NULL' or '0' a vector of available kits is printed and NA returned.