Added doamins

app/views/domains/index.html.erb

@@ -0,0 +1,14 @@
+<p style="color: green"><%= notice %></p>
+
+<h1>Domains</h1>
+
+<div id="domains">
+  <% @domains.each do |domain| %>
+    <%= render domain %>
+    <p>
+      <%= link_to "Show this domain", domain %>
+    </p>
+  <% end %>
+</div>
+
+<%= link_to "New domain", new_domain_path %>