TileMapParser's object group logic moved into parseObjectGroup method for reusability
TileMapParser's object group logic moved into parseObjectGroup method for reusability

yupaul/phaser-ce,natlot/phaser-ce,yupaul/phaser-ce,natlot/phaser-ce,photonstorm/phaser-ce,photonstorm/phaser-ce,yupaul/phaser-ce,natlot/phaser-ce,photonstorm/phaser-ce,yupaul/phaser-ce,natlot/phaser-ce,photonstorm/phaser-ce