Use font.lib['public.postscriptNames'] instead of glyph.lib['public.postscriptName']
Use font.lib['public.postscriptNames'] instead of glyph.lib['public.postscriptName']

Fixes #72

moyogo/ufo2ft,googlefonts/ufo2ft,googlei18n/ufo2ft,jamesgk/ufo2ft,jamesgk/ufo2fdk