Warning: the Reset button doesn't just reset the colored squares, but also deletes the walls you have drawn. I have made a pull request with button labels that

Warning: the Reset button doesn't just reset the colored squares, but also deletes the walls you have drawn. I have made a pull request with button labels that make that more clear: https://github.com/qiao/PathFinding.js/pull/3 https://github.com/qiao/PathFinding.js/pull/3.