0.7.0

• Swift 1.2 support
• baseURL, requestBodyBuilder and ResponseBodyParser are changed to class var.

override class var baseURL: NSURL {
    return NSURL(string: "https://api.github.com")!
}

override class var requestBodyBuilder: RequestBodyBuilder {
    return .JSON(writingOptions: nil)
}

override class var responseBodyParser: ResponseBodyParser {
    return .JSON(readingOptions: nil)
}