Update bitcoinunits.h
Update bitcoinunits.h

Adding Koinu @leofidus :D

leofidus/glowing-octo-ironman,leofidus/glowing-octo-ironman,leofidus/glowing-octo-ironman,inutoshi/inutoshi,inutoshi/inutoshi,leofidus/glowing-octo-ironman,inutoshi/inutoshi,leofidus/glowing-octo-ironman,inutoshi/inutoshi