Refactored position
Removed support for php 5.3 version
Renamed FileSystem class to FileStorage
Renamed isUsable to isCreated()
Refactored coding standards
Added file exceptions
Added directory exceptions
Removed old tests
Renamed method
Added test for load and create file
Removed old tests
Refactored structure
Refactored getPath()
Added test for getFileName()
Added getFileName()
Fixed test
Addded test for overwrite()
Added test for read()
Removed useless condition
Fixed getter for path