added class Shell for the feature Airstrike
added class ShellControl for the feature Airstrike
added new Model Bomb to implement the feature Airstrike
added README´S to the Models to show the free to use license
edited class ShipMap for the feature Airstrike
edited class ImpactEffectManager to improve the Fire and Water Particles
edited class MapViewSynchronizer for the feature Airstrike
edited class BattleState for the feature Airstrike
edited class BattleshipApp for the feature Airstrike
