Add /badges route that lists all defined badges.

spec/controllers/badges_controller_spec.rb

@@ -0,0 +1,15 @@
+require 'spec_helper'
+
+describe BadgesController do
+  let!(:badge) { Fabricate(:badge) }
+
+  context 'index' do
+    it 'should return a list of all badges' do
+      xhr :get, :index
+
+      response.status.should == 200
+      parsed = JSON.parse(response.body)
+      parsed["badges"].length.should == 1
+    end
+  end
+end