add simplecov-rcov formatter for jenkins

Gemfile

@@ -26,6 +26,7 @@ group :test do
 
   # test coverage
   gem "simplecov",                 "0.10.0", require: false
+  gem "simplecov-rcov",            "0.2.3",  require: false
   gem "codeclimate-test-reporter",           require: false
 
   # test helpers

Gemfile.lock

@@ -156,6 +156,8 @@ GEM
       json (~> 1.8)
       simplecov-html (~> 0.10.0)
     simplecov-html (0.10.0)
+    simplecov-rcov (0.2.3)
+      simplecov (>= 0.4.1)
     slop (3.6.0)
     sprockets (3.2.0)
       rack (~> 1.0)
@@ -185,6 +187,7 @@ DEPENDENCIES
   rspec-rails (= 3.2.3)
   rubocop (= 0.32.0)
   simplecov (= 0.10.0)
+  simplecov-rcov (= 0.2.3)
   sqlite3
 
 BUNDLED WITH

spec/spec_helper.rb

@@ -4,6 +4,11 @@ require File.join(File.dirname(__FILE__), "..", "test", "dummy", "config", "envi
 require "rspec/rails"
 
 require "simplecov"
+require "simplecov-rcov"
+SimpleCov.formatters = [
+  SimpleCov::Formatter::HTMLFormatter,
+  SimpleCov::Formatter::RcovFormatter
+]
 SimpleCov.start do
   add_filter "spec"
 end