fix a parameter name issue, add a synchronous request call

let request = YYHRequest(url: NSURL(string: "http://www.google.com/"))
request.parameters["name"] = "value"

Microsoft IIS would've got a parameter name as "?name". This patch fixed it.
Are you editing this file in your project? I don't see how these property observers will help you unless you edit the file and insert your logic.