replace!

# File lib/bundler/vendor/thor/lib/thor/actions/inject_into_file.rb, line 99
      def replace!(regexp, string, force)
        return if pretend?
        content = File.read(destination)
        if force || !content.include?(replacement)
          content.gsub!(regexp, string)
          File.open(destination, "wb") { |file| file.write(content) }
        end
      end