Using _.template(tpl)(data) rather than _.template(tpl, data)
_.union only works on iterables since 1.7.0
Pointing underscore to latest again
Installing elasticsearch 1.1.1 manually for Travis
Using `OaeUtil.toArray` to ensure column fields are arrays
Minor wording improvement in travis file
Merge branch 'master' of https://github.com/oaeproject/Hilary