Is this included anywhere currently?  I don't see any references to it in the `application.js` file, but rails 4 vendor/assets is still new to me.

I'm also unfamiliar w/ the railsAutocomplete library, so I'll defer to others on if that's the library we'll ultimately want to use around the app for all of our autocomplete needs (e.g. internal image widgets and the mechanism that will fetch documents from outside systems). 

Not saying this should hold up the PR, just a question that popped into my head when I saw this library included.