start (Merb::Rack::Runner)

    # File lib/merb-core/rack/adapter/runner.rb, line 17
          def self.start(opts={})
            Merb::Server.change_privilege
            if opts[:runner_code]
              if File.exists?(opts[:runner_code])
                eval(File.read(opts[:runner_code]), TOPLEVEL_BINDING, __FILE__, __LINE__)
              else
                eval(opts[:runner_code], TOPLEVEL_BINDING, __FILE__, __LINE__)
              end
              exit
            end
          end