TODO

• Listen for keyboard events in addition to button click.
• End game modal with Try Again button.
• Read words in from file or internet.
• Move on to next word if user chooses Try Again.

Done

• Three components: header, grid, keyboard.
• Grid and keyboard colors depend on whether matched or not.
• Keyboard button with onClick.
• Three types of input: Enter, Del, and character.
• Accept Enter key only at end of row.
• End game - win or lose. Stop accepting input. Don't increment row.
• Make display: grid for 5x6 grid.
• Box shadow for keyboard keys.