GameActivity: Remove unused import
Add new class GameGridAdapter - to be passed as adapter to GridView
Grid: Add method markMatchingBlocksDeleted
GameActivity.findMatches: Use Grid.markMatchingBlocksDeleted
GameActivity.onCreate: Make local variable gridAdapter a class field lalled gameGridAdapter instead
GameActivity.findMatchesInGrid: Call gameGridAdapter.notifyDataSetChanged to update gridView on screen
GameActivity: Change type of field gameGridAdapter to BaseAdapter
GameActivity: Use GameGridAdapter as the adapter for the GridView instead of an ArrayAdapter instance
GameGridAdapter.getView: If textView is a matched block, set it's background colour to red