[ServiceContract]
    public class ContactsResource
    {
        private IContactRepository repository;

        public ContactsResource(IContactRepository repo)
        {
            this.repository=repo;
        }

        [WebGet(UriTemplate="")]
        public List<Contact> Get()
        {
            return repository.GetAll();
        }

        [WebInvoke(UriTemplate ="", Method="POST")]
        public HttpResponseMessage<Contact> Post(Contact contact)
        {
            repository.Post(contact);
            var response = new HttpResponseMessage<Contact>(contact);
            response.StatusCode = HttpStatusCode.Created;
            return response;
        }
    }