New level, Scoring, Block tower

Fold Wars now has a scoring system. You score more by killing more enemies while keeping maximum number of factoids (the yellow gems) in the pavilion. Building towers and ammo, takes away from the score. So the score is the indication of how efficiently you plan and execute your tower strategy.

Also added 2nd level, which introduces Block towers. These are the towers that cost half, don't fire; but are used to channel the enemy along desired paths. A typical usage is to build obstacles in the path of the enemy so that it spends more time on the map and gives more opportunity to be hunted by the towers.