struct GithubRepository {
  var name: String!
  var fullName: String!
  var description: String!
}

extension GithubRepository: BasicMappable {
  mutating func sequence(map: Map) throws {
    try name <~> map["name"]
    try fullName <~> map["full_name"]
    try description <~> map["description"]
  }
}

let url = "https://api.github.com/repos/tablexi/AlamofireGenome"
Alamofire.request(.GET, url).responseObject { response: (Response<GithubRepository, NSError>) in
  switch response.result {
    case .Success(let repository): // ...
    case .Failure(let error): // ...
  }
}

let url = "https://api.github.com/orgs/tablexi/repos"
Alamofire.request(.GET, url).responseArray { response: (Response<[GithubRepository], NSError>) in
  switch response.result {
    case .Success(let repositories): // ...
    case .Failure(let error): // ...
  }
}