Upgrade rspec-rails

Gemfile

@@ -65,7 +65,7 @@ group :development, :test do
   gem 'listen', '~> 3.2'
   gem 'pry', '~> 0.13'
   gem 'pry-rails'
-  gem 'rspec-rails', '~> 3.8'
+  gem 'rspec-rails', '~> 4.0'
   gem 'shoulda-matchers', '~> 5.3'
   gem 'simplecov', '~> 0.16.1'
   gem 'spring'

Gemfile.lock

@@ -329,23 +329,23 @@ GEM
     rexml (3.3.8)
     rmagick (5.3.0)
       pkg-config (~> 1.4)
-    rspec-core (3.9.3)
-      rspec-support (~> 3.9.3)
-    rspec-expectations (3.9.4)
+    rspec-core (3.13.1)
+      rspec-support (~> 3.13.0)
+    rspec-expectations (3.13.3)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.9.0)
-    rspec-mocks (3.9.1)
+      rspec-support (~> 3.13.0)
+    rspec-mocks (3.13.1)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.9.0)
-    rspec-rails (3.9.1)
-      actionpack (>= 3.0)
-      activesupport (>= 3.0)
-      railties (>= 3.0)
-      rspec-core (~> 3.9.0)
-      rspec-expectations (~> 3.9.0)
-      rspec-mocks (~> 3.9.0)
-      rspec-support (~> 3.9.0)
-    rspec-support (3.9.4)
+      rspec-support (~> 3.13.0)
+    rspec-rails (4.1.2)
+      actionpack (>= 4.2)
+      activesupport (>= 4.2)
+      railties (>= 4.2)
+      rspec-core (~> 3.10)
+      rspec-expectations (~> 3.10)
+      rspec-mocks (~> 3.10)
+      rspec-support (~> 3.10)
+    rspec-support (3.13.1)
     rubocop (0.83.0)
       parallel (~> 1.10)
       parser (>= 2.7.0.1)
@@ -470,7 +470,7 @@ DEPENDENCIES
   rails-html-sanitizer (~> 1.2.0)
   rails_autolink (~> 1.1.6)
   rmagick (~> 5.3.0)
-  rspec-rails (~> 3.8)
+  rspec-rails (~> 4.0)
   rubocop (~> 0.83.0)
   rubyzip (~> 1.3.0)
   scss_lint (~> 0.54)