cowboy dispatcher config

cowboy_dispather

    Dispatch=[
	      {'_', [
	      {[<<"static">>, '...'], cowboy_http_static,
	       [{directory, "./priv"}, 
		{mimetypes, [
			     {<<".css">>, [<<"text/css">>]},
			     {<<".js">>, [<<"application/javascript">>]},
			     {<<".html">>, [<<"text/html">>]}
			     ]}
	       ]},
		     {['_'],cowboy_bench_handler,[]}
	       
	       ]}
	     ],
    case cowboy:start_listener(http, 100, 
			  cowboy_tcp_transport, [{port, Port}],
			  cowboy_http_protocol, [{dispatch, Dispatch}]) of
	{ok, Pid}->
	    register(cowboybehop, Pid),
	    io:format("do something useful");
	{_,_}->
	    io:format("failed to start the server")
		end,