Organisation getter

organisations.swift

extension GitKit {
    
    public class func getMyOrganisations() -> Observable<[Organisation]> {
        
        guard let organisationsURL = GitKit.currentUser.value?.organizationsUrl else { return [] }
        
        return Alamofire.request(.GET, (organisationsURL))
            .rx_responseJSON()
            .map { response, json in
                guard let array = json as? [[String:AnyObject]] else { return [] }
                return array.map { [unowned self] json in
                    return Organisation(json: array)
                }
            }
    }
    
}