faye protocol always send and ACK for published messages.

remove OnPublishResponse and make publish a blocking function until we receive ACK from server

transport/transport.go

@@ -11,6 +11,7 @@ type Options struct {
 	Headers http.Header
 	Cookies http.CookieJar
 
+	MaxRetries    int
 	RetryInterval time.Duration
 	DialDeadline  time.Duration
 	ReadDeadline  time.Duration