added test case for classes with an implementation declaration.
added test case for classes with an implementation declaration.

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