created startGame function and wired up start button

[dhuang612]

moved restart function call to the end of gameOver function.

created logic for start function

• randomizing puzzles order
  • disabled restart button since it's the first time the user is starting
  • removed logic for remove game over information

updated logic for restart function

• removed randomizing of puzzles this way the order only gets shuffles when hitting start.

set rhyme text content global before start to give information to end user

• now says press start to play game.

removed global shufflepuzzles call since it is now tied to start game.

[dhuang612]

Additional work:

Noticed that the game was no longer ending after 4 incorrect guesses. updated logic for game to end after 4 incorrect guesses -tested and confirmed

moved restart call out of gameOver function so that the game didn't auto restart removed disabling the start button

moved instruction to end user into constructor so it's no longer a global variable. moved disabled restart button into same location