Description:
	> Added the inotfy_events library.
	> inotify is an effective tool to monitor and notify filesystem changes.
	  you can specify a list of files and directories that needs to be montiored
	  by inotify.
	> added functions :
		init_watch_event(),
		add_watch_dir(),
		remove_watch(),
		read_dir_event(),
		is_dir_modified().