Remove BWIGameModel.
Remove init method from BWGameModel.
Remove BWIGameController. Also remove init method from BWGameController.
Remove BWIGameView. Also remove init method from BWGameView.
Remove BWITimer.
Remove BWITacticsMap.
Remove BWITacticsScene, BWITileLayer and BWITileSprite.
Remove BWITileBasicData.
Remove BWITile.
Remove BWIBasicData and BWIWeatherBasicData.
Merge pull request #3 from Babygogogo/remove-unnecessary-interfaces

Remove unnecessary interfaces, fixes #2