Added icons to social buttons

app/views/landing/index.html.erb

@@ -47,10 +47,15 @@
       <div id="landing_page_footer_oauth_append">
         <% if current_user.nil? %>
         <p>You can have a personal URL (with recordings) by signing in below</p>
-        <ul>
-          <li><%= link_to 'Twitter', '/auth/twitter' %></li>
-          <li><%= link_to 'Google', '/auth/google' %></li>
-        </ul>
+
+        <div>
+          <%= link_to('/auth/twitter', :class => "btn btn-block btn-md btn-social-icon btn-twitter") do %>
+            <span class="fa fa-twitter"></span>
+          <% end %>
+          <%= link_to('/auth/google', :class => "btn btn-block btn-md btn-social-icon btn-google") do %>
+            <span class="fa fa-google"></span>
+          <% end %>
+        </div>
         <% else %>
           <div>Hello <%= current_user.name %></div>
           <div><%= link_to 'Personal Room', current_user.room_url %></div>