change data attribute uiAutocomplete on ui-autocomplete
Fixed change event trigger on initialization
Merge branch 'master' of github.com:heruan/bootstrap-tokenfield into heruan-master

Conflicts:
	bootstrap-tokenfield/bootstrap-tokenfield.js
Merge pull request #21 from jiminy/data-attribute

Doesn't really change anything in functionality, but I guess it's a bit nicer. Both `ui-autocomplete` and `uiAutocomplete` are the same thing actually.
Improve typeahead integration. Fixes #13