Hide/Disable root element

Ive been fiddling with the Mif.tree data structure. So far i can load any tree of data as long as it has a single root node. If I have two nodes in the javascript array, both as top level nodes, only the first node is shown. A small example:

Currently:
- Root
--- node 1
--- node 2
--- node 3

Preferred:
- node 1
- node 2
- node 3

My question is, is there an elegant way to achieve the above preferred structure?

Thanks for the wonderful tree so far.