Update side-panel.hbs

Added about page

themes/uno/partials/side-panel.hbs

@@ -20,7 +20,11 @@
               <li class="navigation__item"><a href="{{@blog.url}}/#blog" title="link to {{@blog.title}} blog" class="blog-button">Blog</a></li>
             </ul>
           </nav>
-
+          <nav class="cover-navigation cover-navigation--primary">
+            <ul class="navigation">
+              <li class="navigation__item"><a href="{{@blog.url}}/2015/01/31/About-Page.html" title="link to About page" class="blog-button">About</a></li>
+            </ul>
+          </nav>
           {{> social}}
 
         </div>