Single.fromCallable

ApiClientRxImpl.kt

override fun login(auth: Authorization): Single<GithubUser> = Single.fromCallable {
	val response = get("https://api.github.com/user", auth = auth)
	if (response.statusCode != 200) {
		throw RuntimeException("Incorrect login or password")
	}

	val jsonObject = response.jsonObject
	with(jsonObject) {
		return@with GithubUser(getString("login"), getInt("id"),
				getString("repos_url"), getString("name"))
	}
}