use proper kernel.org link for bti download
It's not in my directory anymore, it is in the
software "root" on kernel.org
change the download link to point to the directory
Not the actual release, that would get old having to update it
all the time.
Merge branch 'gh-pages' of git://github.com/amir/bti into gh-pages
Took amir's version, it is much better than my hack.
First pages commit
github generated gh-pages branch