explain fragments in readme

README.md

@@ -174,6 +174,34 @@ Reveal.addEventListener( 'slidechanged', function( event ) {
 } );
 ```
 
+### Internal links
+
+It's easy to link between slides. The first example below targets the index of another slide whereas the second targets a slide with an ID attribute (```<section id="some-slide">```):
+
+```html
+<a href="#/2/2">Link</a>
+<a href="#/some-slide">Link</a>
+```
+### Fullscreen mode
+Just press »F« on your keyboard to show your presentation in fullscreen mode. Press the »ESC« key to exit fullscreen mode.
+
+### Fragments
+Fragments are used to highlight individual elements on a slide. Every elmement with the class ```fragment``` will be stepped through before moving on to the next slide. Here's an example: http://lab.hakim.se/reveal-js/#/16
+
+The default fragment style is to start out invisible and fade in. This style can be changed by appending a different class to the fragment:
+
+```html
+<section>
+	<p class="fragment grow">grow</p>
+	<p class="fragment shrink">shrink</p>
+	<p class="fragment roll-in">roll-in</p>
+	<p class="fragment fade-out">fade-out</p>
+	<p class="fragment highlight-red">highlight-red</p>
+	<p class="fragment highlight-green">highlight-green</p>
+	<p class="fragment highlight-blue">highlight-blue</p>
+</section>
+```
+
 ### Fragment events
 
 When a slide fragment is either shown or hidden reveal.js will dispatch an event.
@@ -187,16 +215,6 @@ Reveal.addEventListener( 'fragmenthidden', function( event ) {
 } );
 ```
 
-### Internal links
-
-It's easy to link between slides. The first example below targets the index of another slide whereas the second targets a slide with an ID attribute (```<section id="some-slide">```):
-
-```html
-<a href="#/2/2">Link</a>
-<a href="#/some-slide">Link</a>
-```
-### Fullscreen mode
-Just press »F« on your keyboard to show your presentation in fullscreen mode. Press the »ESC« key to exit fullscreen mode.
 
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