Case insensitive highlighter

For example, data = ['Bootstrap', 'typeahead'].
If users type 'boo' or 'Typ', corresponding characters should be highlighted.

Left: New, Right: Current
![caseinsensitivehighlighter](https://cloud.githubusercontent.com/assets/4402060/4956825/29a3ed72-669f-11e4-95b9-92f4c7b886f9.png)

Mine
http://jsfiddle.net/nrh9dxxo/

Current
http://jsfiddle.net/udk4d4nh/