Merge pull request hakimel#55 from phrix32/master

example for 'hide title' option

README.adoc

@@ -160,6 +160,13 @@ Here is https://github.com/hakimel/reveal.js#markup[upstream documentation] on t
 
 NOTE: The `reveal.js` backend only supports level 1 (`==`) and level 2 (`===`) sections. Level 3 sections are not supported and will not render correctly.
 
+....
+== !
+This is a slide with hidden title
+....
+
+If you don't want to have a title on each of your slides, setting your title to `!` allows you to hide the title of the given slide.
+
 == reveal.js Options
 
 There are some attributes that can be set at the top of the document which they are specific of +revealjs+ backend.