Any councilman or township commissioner who by his vote causes to be appointed any person to the police force of any municipality contrary to the provisions of this act, or any councilman, township commissioner, or member of the commission who wilfully refuses to comply with or conform to the provisions of this act, shall be deemed guilty of a misdemeanor, and, upon conviction thereof, shall be sentenced to pay a fine not exceeding one hundred dollars ($100.00), or suffer imprisonment not exceeding three months, or both.