Update to Ruby 2.4

.ruby-version

@@ -1 +1 @@
-2.3.1
+2.4.0

.travis.yml

@@ -2,4 +2,4 @@ language: ruby
 cache: bundler
 sudo: false
 rvm:
-  - 2.3.1
+  - 2.4.0

Gemfile

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 source "https://rubygems.org"
 
-ruby "2.3.1"
+ruby "2.4.0"
 
 gem "rake", "~> 10.1"
 gem "tilt", "~> 1.3"

Gemfile.lock

@@ -8,17 +8,17 @@ GEM
       thread_safe (~> 0.3, >= 0.3.1)
     backports (3.6.8)
     byebug (9.0.6)
-    codeclimate-test-reporter (0.6.0)
-      simplecov (>= 0.7.1, < 1.0.0)
+    codeclimate-test-reporter (1.0.3)
+      simplecov
     coderay (1.1.1)
     coercible (1.0.0)
       descendants_tracker (~> 0.0.1)
-    coveralls (0.8.15)
+    coveralls (0.8.17)
       json (>= 1.8, < 3)
       simplecov (~> 0.12.0)
       term-ansicolor (~> 1.3)
       thor (~> 0.19.1)
-      tins (>= 1.6.0, < 2)
+      tins (~> 1.6)
     descendants_tracker (0.0.4)
       thread_safe (~> 0.3, >= 0.3.1)
     diff-lcs (1.2.5)
@@ -31,22 +31,20 @@ GEM
     method_source (0.8.2)
     mini_portile2 (2.1.0)
     multi_json (1.12.1)
-    nokogiri (1.6.8)
+    nokogiri (1.7.0)
       mini_portile2 (~> 2.1.0)
-      pkg-config (~> 1.1.7)
-    parser (2.3.1.2)
+    parser (2.3.3.1)
       ast (~> 2.2)
-    pkg-config (1.1.7)
     powerpack (0.1.1)
     pry (0.10.4)
       coderay (~> 1.1.0)
       method_source (~> 0.8.1)
       slop (~> 3.4)
-    pry-byebug (3.4.0)
+    pry-byebug (3.4.2)
       byebug (~> 9.0)
       pry (~> 0.10)
-    puma (3.6.0)
-    rack (1.6.4)
+    puma (3.6.2)
+    rack (1.6.5)
     rack-protection (1.5.3)
       rack
     rack-test (0.6.3)
@@ -62,14 +60,14 @@ GEM
     rspec-expectations (3.5.0)
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.5.0)
-    rspec-html-matchers (0.8.1)
+    rspec-html-matchers (0.8.2)
       nokogiri (~> 1)
       rspec (>= 3.0.0.a, < 4)
     rspec-mocks (3.5.0)
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.5.0)
     rspec-support (3.5.0)
-    rubocop (0.42.0)
+    rubocop (0.46.0)
       parser (>= 2.3.1.1, < 3.0)
       powerpack (~> 0.1)
       rainbow (>= 1.99.1, < 3.0)
@@ -95,11 +93,11 @@ GEM
     slop (3.6.0)
     term-ansicolor (1.4.0)
       tins (~> 1.0)
-    thor (0.19.1)
+    thor (0.19.4)
     thread_safe (0.3.5)
     tilt (1.4.1)
-    tins (1.12.0)
-    unicode-display_width (1.1.0)
+    tins (1.13.0)
+    unicode-display_width (1.1.2)
     virtus (1.0.5)
       axiom-types (~> 0.1)
       coercible (~> 1.0)
@@ -127,7 +125,7 @@ DEPENDENCIES
   virtus
 
 RUBY VERSION
-   ruby 2.3.1p112
+   ruby 2.4.0p0
 
 BUNDLED WITH
-   1.12.5
+   1.13.7

spec/spec_helper.rb

@@ -1,13 +1,13 @@
 # frozen_string_literal: true
 require "rubygems"
 require "coveralls"
-require "codeclimate-test-reporter"
+require "simplecov"
 require "byebug"
 
 # force the environment to 'test'
 ENV["RACK_ENV"] = "test"
 
-CodeClimate::TestReporter.start
+SimpleCov.start
 Coveralls.wear!
 
 Dir.glob("./spec/support/{helpers}/*.rb").each { |file| require file }