using github logo

src/doc/_includes/jumbotron-carousel.html

@@ -13,7 +13,9 @@
         <div class="shameless-self-promotion">
           Version {{ site.forkawesome.version }}
           &nbsp;&nbsp;&middot;&nbsp;&nbsp;
-          <a href="{{ site.forkawesome.github.url }}">GitHub Project</a>
+          <a href="{{ site.forkawesome.github.url }}">
+            <i class="fa fa-github-alt" aria-hidden="true"></i> GitHub Project
+          </a>
           </div>
       </div>
       <div class="col-md-4 col-sm-4">