We've recently gotten hold of the 'bolt' account on Github, which means we'll be moving our repository from github.com/bobdenotter/bolt to github.com/bolt/bolt. We'll make this change on sunday the 24th of march.
If you're using Bolt through composer, please change your composer.json accordingly. If you're using a version of bolt directly checked out from our repository, you'll need to change the origin as well:
git remote set-url origin git://github.com/bolt/bolt.git
Finally, if you have no idea what this all means: You won't have to change anything, and your version of Bolt will keep working just fine. :-)