fix index name clash for multiple models
Merge branch 'multiple_models' of https://github.com/rselk/closure_tree into five_two_oh
Matt took my PR for foreigner
xdescribe is not going to work for me here. We need to make this pass.
change the test models to mostly use `has_closure_tree`
Thanks for your work Ryan!
try to make the generator_spec pass in travis