Add SimpleCov for coverage as per the latest the CodeClimate requirement

.gitignore

@@ -17,3 +17,5 @@
 /tmp
 
 /config/database.yml
+
+/coverage

Gemfile

@@ -43,7 +43,11 @@ group :development, :test do
   gem 'factory_girl_rails'
   gem 'shoulda-matchers'
 end
-gem "codeclimate-test-reporter", group: :test, require: nil
+
+group :test do
+  gem "simplecov"
+  gem "codeclimate-test-reporter", "~> 1.0.0"
+end
 
 group :development do
   # Access an IRB console on exception pages or by using <%= console %> in views

Gemfile.lock

@@ -65,8 +65,8 @@ GEM
       thor (~> 0.19)
     builder (3.2.2)
     byebug (6.0.2)
-    codeclimate-test-reporter (0.4.8)
-      simplecov (>= 0.7.1, < 1.0.0)
+    codeclimate-test-reporter (1.0.3)
+      simplecov
     coffee-rails (4.1.0)
       coffee-script (>= 2.2.0)
       railties (>= 4.0.0, < 5.0)
@@ -250,7 +250,7 @@ PLATFORMS
 DEPENDENCIES
   activeadmin!
   byebug
-  codeclimate-test-reporter
+  codeclimate-test-reporter (~> 1.0.0)
   coffee-rails (~> 4.1.0)
   devise
   factory_girl_rails
@@ -265,6 +265,7 @@ DEPENDENCIES
   sass-rails (~> 5.0)
   sdoc (~> 0.4.0)
   shoulda-matchers
+  simplecov
   spring
   therubyracer
   turbolinks
@@ -272,4 +273,4 @@ DEPENDENCIES
   web-console (~> 2.0)
 
 BUNDLED WITH
-   1.10.6
+   1.13.7

spec/spec_helper.rb

@@ -17,7 +17,9 @@
 #
 # See http://rubydoc.info/gems/rspec-core/RSpec/Core/Configuration
 require "codeclimate-test-reporter"
-CodeClimate::TestReporter.start
+require "simplecov"
+
+SimpleCov.start
 
 RSpec.configure do |config|
   # rspec-expectations config goes here. You can use an alternate