Implement ready event for fsevents mode

gh-102
Implement ready event for all modes

Resolves gh-102
Merge branch 'master' into ready-event

* master:
  Fix fs.watch reuse oversights
Rename internal properties to indicate they are private
Merge branch 'master' into ready-event

* master:
  Release 0.10.9
  Remove unused vars
  Unclose FSWatcher instance upon new add
  Fix fs.watch broadcasts
  Remove old polling listener cleanup code
  Use absolute paths for FsWatchInstances keys

Conflicts:
	index.js
Print ready in example script
Fix ready event for fsevents with watch array
Merge branch 'private-properties'

* private-properties:
  Rename internal properties to indicate they are private

Conflicts:
	index.js
Fix issues with options defined as `undefined`

brunch/brunch#890