Allow empty classes without newline
Allow empty classes without newline

metasyn/rainbow,jeremykenedy/rainbow,greyhwndz/rainbow,HotelsDotCom/rainbow,javipepe/rainbow,linuxl0ver/rainbow,ccampbell/rainbow,greyhwndz/rainbow,jeremykenedy/rainbow,metasyn/rainbow,cybrox/rainbow,metasyn/rainbow,ccampbell/rainbow,ptigas/rainbow,segmentio/rainbow,HotelsDotCom/rainbow,cybrox/rainbow,ptigas/rainbow,javipepe/rainbow,linuxl0ver/rainbow,linuxl0ver/rainbow,greyhwndz/rainbow,segmentio/rainbow,jeremykenedy/rainbow,javipepe/rainbow,cybrox/rainbow,HotelsDotCom/rainbow