Stephane Liu

Overalls expects a consolidated lcov.info file. ``` # Gemfile gem "simplecov-lcov" # spec_helper.rb if ENV["COVERAGE"] require "simplecov" require "simplecov-lcov" SimpleCov.start "rails" do if ENV["CI"] SimpleCov::Formatter::LcovFormatter.config do |config config.report_with_simgle_file = true...