It shall be the duty of the Township Clerk, or someone authorized and directed by him, to keep up-to-date the certified copy of the book containing the Code required to be filed in his office for the use of the public. All changes in said Code and all ordinances adopted subsequent to the effective date of this codification, which shall be adopted specifically as part of the Code, shall, when finally adopted, be included therein by reference until such changes or new ordinances are printed as supplements to said Code book, at which time such supplements shall be inserted therein.