Recursive Tail -F on a directory. Automatically detects and tails new files.

###Usage

	var mod = require("folder-tail"),
	fd      = "aFolder",
	ft      = mod.startTailing(fd, function(e) {
		console.log(e);
	});
	
	ft.on('line', function(line) {
		console.log(fd + " grew: " + line);
	});

###Details

Requiring the module returns an object with one method:

startTailing(fd, onErr, [ext, interval])

• fd: A file descriptor for the folder
• onErr: error handler function. Is passed an error object. Is called every time an error is encountered.
• ext (optional): A string used to filter files (e.g. '*.log' to filter out log files). You can use any glob expression (see the npm module minimatch for more details). Defaults to '*'.
• interval (optional): Milliseconds to wait before looking for new files. Defaults to 1000.

This method returns an eventEmitter that emits the following events (besides 'error')

• 'line': passes two strings to listeners; the new line and its associated file descriptor

###Notes

Error handling is not yet finalized/formalized. Please listen for error events and be careful.

Code contributions, bug reports, etc. are welcome. Just use the normal Github channels.