Adds sponsor model

spec/factories/sponsors.rb

@@ -0,0 +1,11 @@
+# Read about factories at https://github.com/thoughtbot/factory_girl
+
+FactoryGirl.define do
+  factory :sponsor do
+    name 'Example sponsor'
+    website_url 'http://www.example.com'
+    description 'Lorem Ipsum Dolor'
+    sponsorship_level
+    conference
+  end
+end

spec/models/sponsor_spec.rb

@@ -0,0 +1,17 @@
+require 'spec_helper'
+
+describe Sponsor do
+  describe 'validations' do
+    it 'has a valid factory' do
+      expect(build(:sponsor)).to be_valid
+    end
+
+    it 'is not valid without a name' do
+      should validate_presence_of(:name)
+    end
+
+    it 'is not valid without a website url' do
+      should validate_presence_of(:website_url)
+    end
+  end
+end