Right to Left support for Twitter Bootstrap 3
Bootstrap Persian version of the site http://rbootstrap.ir/ Ver.2.3.2
I highly recommend bootstrap-rtl. It is built over Bootstrap core, and rtl support is added as it is a bootstrap theme. This would make your code more maintainable as you can always update your core bootstrap files. CDN
Another option to use this stand-alone library, It also comes with few awesome Arabic fonts.
You can find it here: RTL Bootstrap v3.2.0.