Fix basic style issues with rubocop

spec/models/conference_spec.rb

@@ -406,7 +406,7 @@ describe Conference do
   end
 
   describe '#difficulty_levels' do
-    before (:each) do
+    before do
       subject.email_settings = create(:email_settings)
       @easy = create(:difficulty_level, title: 'Easy', color: '#000000')
       @hard = create(:difficulty_level, title: 'Hard', color: '#ffffff')
@@ -503,7 +503,7 @@ describe Conference do
   end
 
   describe 'event type distribution' do
-    before (:each) do
+    before do
       subject.email_settings = create(:email_settings)
       @workshop = create(:event_type, title: 'Workshop', color: '#000000')
       @lecture = create(:event_type, title: 'Lecture', color: '#ffffff')
@@ -599,7 +599,7 @@ describe Conference do
   end
 
   describe 'tracks_distribution' do
-    before (:each) do
+    before do
       subject.email_settings = create(:email_settings)
       @track_one = create(:track, name: 'Track One', color: '#000000')
       @track_two = create(:track, name: 'Track Two', color: '#ffffff')

spec/support/login_macros.rb

@@ -1,5 +1,4 @@
 module LoginMacros
-
   include Warden::Test::Helpers
   Warden.test_mode!
 
@@ -10,5 +9,4 @@ module LoginMacros
   def sign_out
     logout(:user)
   end
-
 end

spec/views/home/index.html.haml_spec.rb

@@ -1,7 +1,7 @@
 require 'spec_helper'
 
 describe 'home/index' do
-   it "renders _conference partial for each conference" do
+  it "renders _conference partial for each conference" do
     allow(view).to receive(:date_string).and_return("January 17 - 21 2014")
     assign(:current, [create(:conference), create(:conference)])
     render