**Note**: I have discontinued development of simple_notify,
          in favour of using the cross-platform `watchdog` library:
          https://github.com/gorakhargosh/watchdog



Example:

import simple_notify
def on_change(event):
	print "event " + event.event + " occurred to " + event.path

watcher = simple_notify.watch("/tmp", callback=on_change)
raw_input("press enter to quit...")

-----
watch() spawns a new thread that will watch for inotify events and
call your callback function.

Directories are tracked recursively, so when watching "/tmp" you would
see everything that happens in /tmp and any of its subdirectories

Your callback receives as its single argument an Event instance.
Event instances have the following fields:
 - path: path to file (relative to the watched root)
 - base: relative path to directory containing this node (from watch root)
 - name: name of this node
 - exists: (boolean) whether the file in this event now exists.
   False for REMOVED and
   MOVED_FROM events, True for ADDED, MODIFIED and MOVED_TO events
 - is_dir: boolean

You can pass `ignore_modifications=True` to `watch` if you don't wish
to be nodified of file modification events (merely additions, removals
and moves).