add missing files

spec/api/notifications_spec.rb

+require 'spec_helper'
+
+describe "app" do
+  describe "notifications" do
+    before(:each) { init_without_subscriptions }
+    describe "POST /api/v1/notifications" do
+      it "returns notifications by class and user" do
+        start_time = Time.now
+        user = User.first
+        thread = CommentThread.first
+        subscription = Subscription.create({:subscriber_id => user._id.to_s, :source_id => thread._id.to_s})
+
+        dummy = random_string = (0..5).map{ ('a'..'z').to_a[rand(26)] }.join
+        comment = Comment.new
+        comment.comment_thread_id = thread.id
+        comment.body = dummy
+        comment.author_id = user.id
+        comment.course_id = 'test course'
+        comment.save!
+
+        sleep 1
+
+        end_time = Time.now
+
+        post "/api/v1/notifications", from: CGI::escape(start_time.to_s), to: CGI::escape(end_time.to_s), user_ids: subscription.subscriber_id
+        last_response.should be_ok
+        last_response.body.to_s.include?(dummy).should == true
+      end
+    end
+  end
+end