- Renamed PSCell, PSAsset, PSBoardData, PSAssetInstance, PSChunk, PSAssetInChunk, PSCompositeAsset
- Added detailed doxygen comments for SLTCell, SLTAsset, SLTLevelSettings, SLTAssetInstance classes
- Implemented the following unit tests:
	- SLTAssetTests
	- SLTAssetInstanceTests
	- SLTCellTests
	- SLTLevelSettings
- Implemented unit tests which verifies the parsed LevelSettings
Merge branch 'master' of github.com:plexonic/saltr-ios-sdk