Merge pull request #2 from Adnard-Kod/andra

added buttons
create button logic in html and change event listener
Merge pull request #3 from Adnard-Kod/jquery_pieces_drop

create button logic in html and change event listener
create feature that changes color in last cell of column when button is clicked
Merge pull request #4 from Adnard-Kod/jquery_pieces_drop

create feature that changes color in last cell of column when button is ...
wip
Merge pull request #5 from Adnard-Kod/jquery_pieces_drop

wip