Documented return values of #ancestors, #ancestors_and_self, #descendants and #descendants_and_self. 
Documented return values of #ancestors, #ancestors_and_self, #descendants and #descendants_and_self. 
zenjoy/mongoid-tree,travis-repos/mongoid-tree,macdiesel/mongoid-tree,radin-reth/mongoid-tree,devilcoders/mongoid-tree,gurix/mongoid-tree,epogue/mongoid-tree,benedikt/mongoid-tree