I guess you can do about whatever you want with it according to the WTFPL licence.
This template is between the work-in-progress state and the "Woo, I not exactly looking for a fully working theme, just one that make my website look pretty with the features I need"-state. Long story short, It does not follow guidelines from wordpress (yes, they guys actually have guidelines, funny uh?).
Some parts are hard-coded, in French. But please fork if you want to, use the
stylesheet if you want to, it is located in
twitter/bootstrap, copy (and replace) the files from
twitter/bootstrap/less, compile, append the result (
styles.css, you are mostly done, I guess.