Tests for SingleDirMonitor have been created
FSMonitorsManagerTest has been created
FSMonitorsManager is thread safe now
FSIndexer is thread safe now
FSIndexerTest has been created
Example program has been created
Correct exceptions for HashFileIndex has been created
Correct exceptions for SingleDirMonitor and IndexUpdater have been created
Correct exceptions for FSMonitoringManager and FSIndexer have been created
Example program has been changed
FSMonitorManager.removeMonitor bug has been fixed