Timer is distracting right now
Adding default difficulty, function onIncorrectDrop()
Call onIncorrectDrop() when bad drop happens
Updating name of incorrect input function
Removing debug code
Clone draggable with dragging
Adding style to word in token bank when dropped onto diagram
Adding hint text
Adding object for handling game logic; refactoring some things from drag/drop to game
Making updateInstructions() parametized
Committing .gitignore; updating it to ignore files in audio directory
Adding case for subject in onDrop(); play 'achievement' sounds on successful drop
Play audio on successful drop
Refactoring success audio play
Adding function for successful drop event