Build docs

I am on the fence about whether I should submit this against 2.4-testing or master. I feel like it's fine to go into master, but if the reviewer disagrees I could be talked into putting it in 2.4 or 2.5.
do another pull immediately before this to shorten the window that you are tagging something that's out of date.

If you tag something and it doesnt push:

 * merge from upstream origin/<branch>
 * `git push <branch>:<branch>`  after checking diff
 * do a new git checkout elsewhere, check out <branch> and do a `tito build --srpm` just to make sure its tagged to the right version and builds ok