Fix for Bootstrap-3-Typeahead compatibility bug
Fix for Bootstrap-3-Typeahead compatibility bug

Bootstrap3-typeahead's `displayText` method expects a value, and bootstrap-tagsinput's `updater` method doesn't seem to provide one. I haven't done extensive testing, but my simple fix (returning the value found in `updater`) seems to fix the issue for me. 

The bug thrown by bootstrap3-typeahead comes from here:
<https://github.com/bassjobsen/Bootstrap-3-Typeahead/blob/master/bootstrap3-typeahead.js#L246>

The specific error I'm seeing: `Uncaught TypeError: Cannot read property 'name' of undefined` (boostrap3-typeahead.js:246)

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I haven't taken the time to investigate any deeper: is the `self.add` method doing anything important that would affect the return value? It seems to currently return `undefined` so I just assumed it wouldn't affect the typeahead plugin.
lowyjoe/bootstrap-tagsinput,gilbertwat/bootstrap-tagsinput,AlexEmerson/bootstrap-tagsinput,giveme168/bootstrap-tagsinput,ajaxtown/bootstrap-tagsinput,Pankul-Mittal/bootstrap-tagsinput,SylvainCorlay/bootstrap-tagsinput,Kha/bootstrap-tagsinput,CoreyHyllested/bootstrap-tagsinput,en-japan/bootstrap-tagsinput,g2laura/bootstrap-tagsinput,Pankul-Mittal/bootstrap-tagsinput,TimSchlechter/bootstrap-tagsinput,James3432/bootstrap-tagsinput,mbrodala/bootstrap-tagsinput,CoreyHyllested/bootstrap-tagsinput,g2laura/bootstrap-tagsinput,carlosmoran092/bootstrap-tagsinput,mobmad/bootstrap-tagsinput,mobmad/bootstrap-tagsinput,TimSchlechter/bootstrap-tagsinput,gdseller/bootstrap-tagsinput,MagdaN/bootstrap-tagsinput,BelinChung/bootstrap-tagsinput,frwi/bootstrap-tagsinput,en-japan/bootstrap-tagsinput,ProPuke/bootstrap-tagsinput,SylvainCorlay/bootstrap-tagsinput,MagdaN/bootstrap-tagsinput,hugopeixoto/bootstrap-tagsinput,kiranw/bootstrap-tagsinput,frwi/bootstrap-tagsinput,AlexEmerson/bootstrap-tagsinput,Youraiseme/bootstrap-tagsinput,HeliWang/bootstrap-tagsinput,ProPuke/bootstrap-tagsinput,zhangda89/bootstrap-tagsinput,HeliWang/bootstrap-tagsinput,James3432/bootstrap-tagsinput,giveme168/bootstrap-tagsinput,zhangda89/bootstrap-tagsinput,gilbertwat/bootstrap-tagsinput,gdseller/bootstrap-tagsinput,ajaxtown/bootstrap-tagsinput,lowyjoe/bootstrap-tagsinput,BelinChung/bootstrap-tagsinput,monoblaine/bootstrap-tagsinput,Kha/bootstrap-tagsinput,Youraiseme/bootstrap-tagsinput,kiranw/bootstrap-tagsinput,monoblaine/bootstrap-tagsinput,hugopeixoto/bootstrap-tagsinput,mbrodala/bootstrap-tagsinput,carlosmoran092/bootstrap-tagsinput