MunsellSpecToHVC: convert Munsell notation to numeric HVC
Description
MunsellSpecToHVC Converts convert Munsell notation 
to numeric Hue,Value,Chroma.
Usage
MunsellSpecToHVC(MunsellSpecString)
Arguments
MunsellSpecString
string with the Munsell hue, value and chroma.
Value
numeric Hue,Value,Chroma