Full CSS package

Merge pull request #11 from uagrace/master

Add nestable.min.css and close issue #9

Allow moving items at the root level

• Allow moving items at the root level - thanks to @mazurva

Allow nodes to be moved to the root level

Merge pull request #6 from Hommer101/AllowMoveToRoot

Allow move to root

v1.0.0

rename NodeMoveAction