The progress bar shows how many slides have been passed in total.
However, when clicking on the progress bar, the target slide is
computed among the subset of /horizontal/ slides.  Thus, when the new
slide is displayed, the progress bar has usually changed to a point
that is unrelated to the clicked one, which I find surprising.

With this change, the target slide is computed from the number of
total slides.  Thus, after a click on the progress bar, the resulting
progress is close to the clicked point, which seems more natural to
me.

Fix URL to pdf-export documentation

Start relative paths in CSS with ./

Update README.md

docs: Fix simple typo, transiition -> transition

There is a small typo in js/controllers/autoanimate.js.

Should read `transition` rather than `transiition`.

Fixed broken URL