show user/pass when in development environment

app/views/devise/sessions/new.html.erb

@@ -1,5 +1,3 @@
-
-
 <%- if devise_mapping.omniauthable? %>
   <%- resource_class.omniauth_providers.each do |provider| %>
     <div class="background">
@@ -8,5 +6,32 @@
   <% end %>
 <% end %>
 
+<%# Show user/pass login if in development environment so we can use test users %>
+<%- if Rails.env.development? %>
+
+  <h2 style="text-align: center;">Dev environment log in</h2>
+  <div style="max-width: 300px; margin: auto;">
+  <%= form_for(resource, as: resource_name, url: session_path(resource_name)) do |f| %>
+    <div class="field">
+      <%= f.label :email %><br/>
+      <%= f.email_field :email, autofocus: true, autocomplete: "email" %>
+    </div>
+
+    <div class="field">
+      <%= f.label :password %><br/>
+      <%= f.password_field :password, autocomplete: "current-password" %>
+    </div>
 
+    <% if devise_mapping.rememberable? %>
+      <div class="field">
+        <%= f.check_box :remember_me %>
+        <%= f.label :remember_me %>
+      </div>
+    <% end %>
 
+    <div class="actions">
+      <%= f.submit "Log in" %>
+    </div>
+  <% end %>
+  </div>
+<% end %>