cherry picks capybara config [#5]

app/controllers/welcome_controller.rb

@@ -0,0 +1,6 @@
+class WelcomeController < ApplicationController
+  
+  def index
+  end
+
+end

app/views/welcome/index.html.erb

@@ -0,0 +1 @@
+<h1>Bienvenido al Ayuntamiento de Madrid</h1>

spec/features/home_spec.rb

@@ -0,0 +1,10 @@
+require 'rails_helper'
+
+feature "Home" do
+
+  scenario "Welcome message" do
+    visit '/'
+    expect(page).to have_content 'Bienvenido al Ayuntamiento de Madrid'
+  end
+
+end