Use CodeClimate + Coversall + SimpleCov locally at the same time

coverage_reporters.rb

# Allows to post coverage data to remote services like Codeclimate & Coversall and use simplecov locally
# to view coverage locally, run: rake spec COV=true 
# add file on the top for spec_helper: require 'coverage_reporters.rb' 
require 'simplecov'
require 'coveralls'
require "codeclimate-test-reporter"

reporters = [
    (Coveralls::SimpleCov::Formatter if Coveralls.will_run?),
    (CodeClimate::TestReporter::Formatter if CodeClimate::TestReporter.run?),
    (SimpleCov::Formatter::HTMLFormatter if ENV['COV'])
].compact

SimpleCov.formatter = SimpleCov::Formatter::MultiFormatter.new(reporters)
SimpleCov.start 'rails' unless reporters.empty?