Minor changes in .gitignore.

Signed-off-by: Stanislav Demyanovich <stan@angrybubo.com>
States: MainMenuState is added + pause feature is added into KruzhochkiState + constructors are normalized + a bit of debug.

Signed-off-by: Stanislav Demyanovich <stan@angrybubo.com>
CGameStateManager: pop state bug is fixed.

Signed-off-by: Stanislav Demyanovich <stan@angrybubo.com>