introduce organizations

spec/models/organization_spec.rb

@@ -0,0 +1,20 @@
+require 'spec_helper'
+
+describe Organization do
+  let(:organization) { create(:organization) }
+
+  describe 'validation' do
+    it 'has a valid factory' do
+      expect( build(:organization) ).to be_valid
+    end
+
+    it 'is not valid without a name' do
+      should validate_presence_of(:name)
+    end
+  end
+
+  describe 'associations' do
+    it { should have_many(:conferences).dependent(:destroy) }
+  end
+end
+