Add a HomeController

app/controllers/home_controller.rb

@@ -0,0 +1,4 @@
+class HomeController < ApplicationController
+  def index
+  end
+end

app/views/home/index.html.slim

@@ -0,0 +1,2 @@
+h1 Home#index
+p Find me in app/views/home/index.html.slim

config/routes.rb

@@ -1,5 +1,9 @@
 Rails.application.routes.draw do
+  get 'home/index'
+
   devise_for :users
+
+  root 'home#index'
   # The priority is based upon order of creation: first created -> highest priority.
   # See how all your routes lay out with "rake routes".
 

spec/controllers/home_controller_spec.rb

@@ -0,0 +1,12 @@
+require 'rails_helper'
+
+RSpec.describe HomeController, :type => :controller do
+
+  describe "GET index" do
+    it "returns http success" do
+      get :index
+      expect(response).to be_success
+    end
+  end
+
+end