URL+query.swift

extension NSURL {
    convenience init(string: String, query: Dictionary<String, String>?) {
        if query == nil {
            self.init(string: string)!
            return
        }
        let components = NSURLComponents(string: string)
        var querryItems = components?.queryItems ?? Array<NSURLQueryItem>()
        query?.forEach() {
            querryItems.append(NSURLQueryItem(name: $0.0, value: $0.1))
        }
        components?.queryItems = querryItems
        self.init(string: "",relativeToURL: components!.URL)!
    }
    
    convenience init(url: NSURL, query: Dictionary<String, String>?) {
        let components = NSURLComponents(URL: url, resolvingAgainstBaseURL: false)
        var querryItems = components?.queryItems ?? Array<NSURLQueryItem>()
        query?.forEach() {
            querryItems.append(NSURLQueryItem(name: $0.0, value: $0.1))
        }
        components?.queryItems = querryItems
        self.init(string: "",relativeToURL: components!.URL)!
    }
}