feat(typeahead) Allow to be able to search multiple times in the same input

[pavloldev6]

Is your feature request related to a problem? Please describe.

I need to be able to have typeahead suggestion for multiple possible values in the same input field. When I type a sentence for example and, after using specific character it should start giving matches and then again and again.

Describe the solution you'd like

Being able to enter multiple values and after using a specified delimiter to start a new search again but concatenate a picked value. For example there are Apple and Mango in typeahead values, when I search "App" it will suggest Apple, I press enter and it populates the input. Then if I type one of provided delimiters, like comma or space etc., and after that type "M" the dropdown should give Mango as an option to pick. When I take it, press enter, the input should have Apple,Mango (when comma used as separator) or Apple Mango (when space used). Possible delimiters could be provided as a separate option. It should also allow to type something else in between which doesn't match any values like Apple,something,Mango
This link demonstrates almost exactly what I am requesting just comma doesn't need to be automatically inserted and other than comma kind of delimiter can be provided.
http://jsfiddle.net/Sherbrow/BwDmM/300/

Describe alternatives you've considered

Considered my own implementation or helping to make a contribution for this feature in this project.

Additional context