chore(plusone): remove plus one from page

The API call was occasionally hanging, causing tests to timeout.

Author: jeffbcross

src/index.html

@@ -129,9 +129,6 @@ <h1>HTML enhanced for web apps!</h1>
               Follow +AngularJS on
               <a href="https://plus.google.com/110323587230527980117?prsrc=3" rel="publisher" style="text-decoration:none;"><img src="https://ssl.gstatic.com/images/icons/gplus-32.png" style="border:0;width:20px;height:20px;" alt=""/></a>
             </li>
-            <li>
-              <g:plusone size="medium" annotation="inline" width="120" href="http://angularjs.org"></g:plusone>
-            </li>
             <li>
                 <a href="https://twitter.com/angularjs" class="twitter-follow-button" data-show-count="true">Follow @angularjs</a>
             </li>
@@ -217,16 +214,16 @@ <h4 class="video-item-heading">{{ video.title }}</h4>
       </div>
 
       <div ng-show="stage.section=='ng-europe'" class="jumbotron-buttons">
-        <a href="https://www.youtube.com/channel/UCEGUP3TJJfMsEM_1y8iviSQ" target="_blank" class="btn btn-primary btn-large" rel="nofollow"> 
+        <a href="https://www.youtube.com/channel/UCEGUP3TJJfMsEM_1y8iviSQ" target="_blank" class="btn btn-primary btn-large" rel="nofollow">
           view all videos
         </a>
         <a href="http://www.ngeurope.org/" target="_blank" class="btn btn-large"  rel="nofollow">
           www.ngeurope.org
         </a>
       </div>
-      
+
       <div ng-show="stage.section=='ng-conf'" class="jumbotron-buttons">
-        <a href="https://www.youtube.com/user/ngconfvideos" target="_blank" class="btn btn-large btn-primary" rel="nofollow"> 
+        <a href="https://www.youtube.com/user/ngconfvideos" target="_blank" class="btn btn-large btn-primary" rel="nofollow">
           view all videos
         </a>
         <a href="http://ng-conf.org/" target="_blank" class="btn btn-large"  rel="nofollow">
@@ -893,8 +890,7 @@ <h2>JavaScript Projects</h2>
     angular.bootstrap(document, ['ngRoute', 'homepage', 'ngLocal.us']);
   </script>
 
-  <script src="https://apis.google.com/js/plusone.js"></script>
-  <script src="//platform.twitter.com/widgets.js"></script>
+  <script async src="//platform.twitter.com/widgets.js"></script>
   <script type="text/javascript">
     var _gaq=[
       ['_setAccount','UA-8594346-3'],