new homepage expo features

docs/_data/showcase.yml

-- name: Little
-  url: http://littleco.com
-  expo_url: http://expo.getbootstrap.com/2014/02/12/little/
-  img: http://expo.getbootstrap.com/screenshots/little.jpg
+- name: Red Antler
+  url: http://www.redantler.com/
+  expo_url: http://expo.getbootstrap.com/2014/02/24/redantler/
+  img: redantler
 
-- name: Engine Yard
-  url: http://engineyard.com
-  expo_url: http://expo.getbootstrap.com/2014/02/10/engine-yard/
-  img: http://expo.getbootstrap.com/screenshots/engine-yard.jpg
+- name: Riot Design
+  url: http://riotdesign.eu/en/
+  expo_url: http://expo.getbootstrap.com/2014/03/13/riot-design/
+  img: riot
 
-- name: Webflow
-  url: http://webflow.com
-  expo_url: http://expo.getbootstrap.com/2014/02/04/webflow/
-  img: http://expo.getbootstrap.com/screenshots/webflow.jpg
+- name: Newsweek
+  url: http://www.newsweek.com/
+  expo_url: http://expo.getbootstrap.com/2014/02/12/newsweek/
+  img: newsweek
 
-- name: Sentry
-  url: https://getsentry.com
-  expo_url: http://expo.getbootstrap.com/2013/05/09/sentry/
-  img: http://expo.getbootstrap.com/screenshots/sentry.jpg
+- name: Robinhood
+  url: https://www.robinhood.com
+  expo_url: http://expo.getbootstrap.com/2014/02/26/robinhood/
+  img: robinhood

docs/index.html

@@ -58,7 +58,7 @@ title: Bootstrap
     {% for showcase in site.data.showcase %}
       <div class="col-sm-3">
         <a href="{{ showcase.expo_url }}" target="_blank" title="{{ showcase.name }}">
-          <img src="{{ showcase.img }}" alt="{{ showcase.name }}" class="img-responsive">
+          <img src="http://expo.getbootstrap.com/screenshots/{{ showcase.img }}.jpg" alt="{{ showcase.name }}" class="img-responsive">
         </a>
       </div>
     {% endfor %}