Update README.md
- fixed files names.
- added secret to StoreController.initialize(...)
- additional secret added
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Update README.md
Amend documentation
buyAppStoreItemWithProcuctId is the function called to purchase stuff from the AppStore
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added 2 more events to EventHandling: EVENT_CURRENCY_BALANCE_CHANGED and EVENT_GOOD_BALANCE_CHANGED
versioning & Non Consumables

1. new versioning options (per metadata and per IStoreAssets) -
metadata will be deleted when bumping these values.
2. new model object "NonConsumableItem".
3. moved "price" to AppStoreItem.
4. fixed dependencies
fixed conversion of NSString to NSNumber
added equipping model to categories

fixed example project to support this.
handling the logic of equipping model inside a category when a virtual
good is equipped.
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Update README.md
equipping status is saved in the DB. removed from VirtualGood model

- EquippingModel functions for conversion from/to string were made
static in VirtualCategory.
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All in key-value database

- all data is saved in a key-value database
- looking for the older database and migrating data if needed
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added storage functionality

- added functionality to storages
- added "addedAmount" to goods/currencies balance change events
fixed function name
changed application directory to "Application Support"

- moving old database if necessary