Pertama

MainActivity.java

repoObservable = Observable.from(listRepo);

        repoObservable.subscribe(new Subscriber<GithubRepo>() {
            @Override
            public void onCompleted() {
                Log.d("GithubRepo","Load done");
            }

            @Override
            public void onError(Throwable e) {
                Log.e("GithubRepo",e.getMessage());
            }

            @Override
            public void onNext(GithubRepo githubRepo) {
                Log.d("GithubRepo","Repo name: "+githubRepo.getName());
            }
        });