Keeping Score pt. 1

[jugglinmike]

The Directory should keep track of successful whacs so that it can report a
score when the game is over. We also want to keep track of moles that
"escape"--the ones that the Director hides automatically because they weren't
clicked in time.

• director.js
  • Define a whacCount instance variable on the Director in the
    constructor (initialize it to 0).
  • Increment (i.e. increase by 1) the whacCount variable whenever the
    player successfully whacs a mole.
  • Define an escapeCount instance variable on the Director in the
    constructor (initialize it to 0).
  • Incremenet the escapeCount variable whenever the Director has to
    automatically hide one of its moles.