@sadr No. Before i started to write this theme, i inspect all Bootstrap+ WordPress solutions that i can use. After i see there is no solution for me that i am happy with it, i decide to write my own theme. In Roots theme, i like their solution for Walker_Nav_Menu so i used this section. Basically only this file is from Roots theme: http://themes.svn.wordpress.org/firmasite/1.1.7/functions/nav.php
A funny note: I was using Infinity theme as my parent theme until 2 months ago. I was using it because their option panel was letting upload images with 1 click (custom plupload implement). When they removed it, i decide to change my parent theme