It's a stock bootstrap with some css modifications. This is clearly not developer oriented, yet its extensible using child themes.
It was not too difficult to extend bootstrap with a couple of scripts, but as a developer, this is something that should perhaps be done ahead of time.
If you are not a developer, there are still a few things you might care about. For example instead of using an icon font like Font Awesome, He use glypicons, bad for retina displays and all flagship phones.
It is a bootstrap based theme, not THE bootstrap wp theme... I have yet to find such a thing.