class Nokogiri::XML::NodeSet

def wrap(html, &blk)

Wrap this NodeSet with +html+ or the results of the builder in +blk+
## 
def wrap(html, &blk)
  each do |j|
    new_parent = document.parse(html).first
    j.add_next_sibling(new_parent)
    new_parent.add_child(j)
  end
  self
end