Unwatching all files and folders
function unwatchAll(){
    for(var filePath in _fileWatchers) {
        if(_fileWatchers[filePath]) _fileWatchers[filePath].close();
        delete _fileWatchers[filePath];
    }
    
    for(var dirPath in _dirWatchers) {
        if(_dirWatchers[dirPath]) _dirWatchers[dirPath].close();
        delete _dirWatchers[dirPath];
    }
}