Update capybara to last version

spec/features/user_sign_in_spec.rb

@@ -0,0 +1,20 @@
+require 'spec_helper'
+
+feature 'User sign in' do
+  scenario 'redirects to the home page when not signed in' do
+    visit root_path
+
+    current_path.should == new_session_path
+  end
+
+  scenario 'signs the user in' do
+    user = FactoryGirl.create(:user)
+
+    visit new_session_path
+    fill_in 'Email', :with => user.email
+    fill_in 'Password', :with => user.password
+    click_button 'Sign in'
+
+    current_path.should == root_path
+  end
+end