Detail in readme
Fix Snaping if guide layer has Leaflet.LayerIndex
Fixed missing extend() method when leaflet.draw plugin is not used

Fixes issue #2
Fixed addGuideLayer() method

either `layer._layers !== undefined` or `typeof layer._layers !== 'undefined'`, but a mix of both doesn't work!
Defer LayerGroup iteration until snapping phase

This makes it possible to update the contents of the LayerGroup after it has been added as a guide layer. This is useful when the contents are fetched as JSON depending on the map bounds for example.
Merge pull request #3 from Turbo87/patch-1

Fixed missing extend() method when leaflet.draw plugin is not used
Merge pull request #4 from Turbo87/patch-2

Fixed addGuideLayer() method
Merge branch 'Turbo87-patch-3'

Conflicts:
	leaflet.snap.js
Add Tobias to authors
Fix unwatchMarker() event cleaning
Add options to control distance and vertices snap
Fix search around buffer when using Leaflet.LayerIndex
Merge branch 'master' into gh-pages