Add minitest/profile to profile 10 slowest tests

Gemfile

@@ -26,6 +26,7 @@ gem 'jekyll_test_plugin_malicious'
 gem 'liquid-c', '~> 0.0.3'
 gem 'minitest'
 gem 'minitest-reporters'
+gem 'minitest-profile'
 gem 'test-unit' if RUBY_PLATFORM =~ /cygwin/ || RUBY_VERSION.start_with?("2.2")
 
 if ENV['BENCHMARK']

script/test

@@ -20,4 +20,4 @@ fi
 
 set -x
 
-time bundle exec ruby -Ilib -Itest -rloader $TEST_FILES
+time bundle exec ruby -Ilib -Itest -rloader $TEST_FILES --profile

test/helper.rb

@@ -10,6 +10,7 @@ require 'rubygems'
 require 'ostruct'
 require 'minitest/autorun'
 require 'minitest/reporters'
+require 'minitest/profile'
 
 require 'jekyll'