Added Store and TownScreen classes
Merge branch 'master' of https://github.com/nchandran3/Silver.git
Merge branch 'master' of https://github.com/nchandran3/Silver.git
Merge branch 'master' of https://github.com/nchandran3/Silver.git
Merge branch 'master' of https://github.com/nchandran3/Silver.git
Changes to Iterator, Map, Player, TownScreen