Make tests pass

"This usage of the Code Climate Test Reporter is now deprecated. Since version
1.0, we now require you to run `SimpleCov` in your test/spec helper, and then
run the provided `codeclimate-test-reporter` binary separately to report your
results to Code Climate.
More information here: https://github.com/codeclimate/ruby-test-reporter/blob/master/README.md"

Gemfile

@@ -5,7 +5,8 @@ group :development do
 end
 
 group :test do
-  gem "codeclimate-test-reporter", group: :test, require: nil
+  gem "codeclimate-test-reporter", require: false
+  gem "simplecov", require: false
 end
 
 gemspec

spec/spec_helper.rb

@@ -1,5 +1,6 @@
+require "simplecov"
 require "codeclimate-test-reporter"
-CodeClimate::TestReporter.start
+SimpleCov.start
 
 require 'rubygems'
 require 'bundler'