Merge pull request #13 from AnnaKalkanis/Audio

add audio on click
Merge pull request #14 from AnnaKalkanis/diagonal_bug_fix_anna

updated diagonal method to pull piece element into both neg and pos arra...
updated diagonal method to pull piece element into both neg and pos arrays
actually fixed the diag function
Merge pull request #15 from AnnaKalkanis/diagonal_bug_fix_anna

actually fixed the diag function
Merge pull request #16 from AnnaKalkanis/fonts

resized images and font files
font changes