Merge branch 'master' into derp

Conflicts:
	docs/_includes/components/alerts.html
	docs/_includes/getting-started/browser-device-support.html

CONTRIBUTING.md

@@ -44,7 +44,7 @@ Guidelines for bug reports:
 
 3. **Isolate the problem** — ideally create a [reduced test
    case](http://css-tricks.com/6263-reduced-test-cases/) and a live example.
-   [This JS Bin](http://jsbin.com/EBAwOkOK/1) is a helpful template.
+   [This JS Bin](http://jsbin.com/lefey/1/edit?html,output) is a helpful template.
 
 
 A good bug report shouldn't leave others needing to chase you up for more

docs/javascript/alerts.md

@@ -9,14 +9,14 @@ title: Alerts
   <h2 id="alerts-examples">Example alerts</h2>
   <p>Add dismiss functionality to all alert messages with this plugin.</p>
   <div class="bs-example">
-    <div class="alert alert-warning fade in" role="alert">
+    <div class="alert alert-warning alert-dismissible fade in" role="alert">
       <button type="button" class="close" data-dismiss="alert"><span aria-hidden="true">&times;</span><span class="sr-only">Close</span></button>
       <strong>Holy guacamole!</strong> Best check yo self, you're not looking too good.
     </div>
   </div><!-- /example -->
 
   <div class="bs-example">
-    <div class="alert alert-danger fade in" role="alert">
+    <div class="alert alert-danger alert-dismissible fade in" role="alert">
       <button type="button" class="close" data-dismiss="alert"><span aria-hidden="true">&times;</span><span class="sr-only">Close</span></button>
       <h4>Oh snap! You got an error!</h4>
       <p>Change this and that and try again. Duis mollis, est non commodo luctus, nisi erat porttitor ligula, eget lacinia odio sem nec elit. Cras mattis consectetur purus sit amet fermentum.</p>