demo(*): add icons to buttons

Author: pkozlowski-opensource

misc/demo-assets/demo.css

@@ -70,6 +70,12 @@ section {
     line-height: 1;
 }
 
+.icon-github {
+    background: no-repeat url('github-16px.png');
+    width: 16px;
+    height: 16px;
+}
+
 /* Not enough room on mobile for markup tab, js tab, and plunk btn. 
   And no one cares about plunk button on a phone anyway */
 @media only screen and (max-device-width: 480px) {

misc/demo-assets/github-16px.png

@@ -48,11 +48,11 @@ <h1>
                     href="http://angular-ui.github.com">AngularUI Team</a></strong></p>
 
             <p class="btn-group">
-                <a class="btn btn-large" href="https://github.com/angular-ui/bootstrap"><i class="icon-github"></i>Code on Github</a>
-                <a class="btn btn-large btn-primary" href="https://github.com/angular-ui/bootstrap/tree/gh-pages">
-                    <i class="icon-download-alt icon-white"></i>Download <small>(<%= version%>)</small>
+                <a class="btn" href="https://github.com/angular-ui/bootstrap"><i class="icon-github"></i> Code on Github</a>
+                <a class="btn btn-primary" href="https://github.com/angular-ui/bootstrap/tree/gh-pages">
+                    <i class="icon-download-alt icon-white"></i> Download <small>(<%= version%>)</small>
                 </a>
-                <a class="btn btn-large" ng-click="showBuildModal()">Create a Build</a>
+                <a class="btn" ng-click="showBuildModal()"><i class="icon-wrench"></i> Create a Build</a>
             </p>
         </div>
         <div class="bs-docs-social">