Looks like readme error

[sadgb]

I was unable to
*= require bootstrap-typeahead-rails
but

*= bootstrap-typeahead-rails/bootstrap-typeahead

works good. I think you should update your readme

[Nerian]

It should work as stated in the Readme.

The index file at [1] should get required when you do require bootstrap-typeahead-rails.

[1] https://github.com/Nerian/bootstrap-typeahead-rails/tree/master/vendor/assets/stylesheets/bootstrap-typeahead-rails

[sadgb]

it doesn't work. Tried clean rails 4.2 application with
line
gem 'bootstrap-typeahead-rails'
in my gemfile

[Nerian]

You can take a look at the test app:

https://github.com/Nerian/bootstrap-typeahead-rails/tree/master/testapp

It works as stated in the Readme. Maybe you could check for differences.