Pegar dados do usuario Github - App Android

Olá Alguem saberia me a com app que coleta os dados de um usuario do github? Segue o status atual do meu codigo:

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Button searchButton = (Button) findViewById(R.id.search_button);
        final EditText searchProfile = (EditText) findViewById(R.id.search_profile);

        searchButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                fillProfileInfo(searchProfile.getText().toString());
            }
        });
    }

    void fillProfileInfo(String profile) {
        String requestUrl = "https://api.github.com/users/" + profile;

        OkHttpClient client = new OkHttpClient();
        Request request = new Request.Builder()
                .get()
                .url(requestUrl)
                .build();

        Call call = client.newCall(request);

        call.enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                Log.i("getProfileInfo", "FAIL");
            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                final String jsonData = response.body().string();
                Log.i("getProfileInfo", jsonData);
                if (response.isSuccessful()) {
                    CardView userCard = (CardView) findViewById(R.id.card_user_info);
                    try {
                        JSONObject rootObj = new JSONObject(jsonData);

                        TextView userName = (TextView) findViewById(R.id.user_name);
                        TextView userBio = (TextView) findViewById(R.id.user_bio);
                        TextView userFollowers = (TextView) findViewById(R.id.user_folowers);
                        TextView userRepos = (TextView) findViewById(R.id.user_repos);
                        ImageView userAvatar = (ImageView) findViewById((R.id.user_avatar));

                        userName.setText(rootObj.getString("login"));
                        userBio.setText(rootObj.getString("bio"));
                        userFollowers.setText(rootObj.getInt("followers") + " Seguidores");
                        userRepos.setText(rootObj.getInt("public_repos") + " Repositórios");

                        try {
                            Glide.with(MainActivity.this).load(rootObj.getString("avatar_url"))
                                    .asBitmap()
                                    .fitCenter()
                                    .into(userAvatar);
                        } catch (Exception e) {
                            e.printStackTrace();
                        }
                        userCard.setVisibility(View.VISIBLE);

                        fillRepoInfo();
                    } catch (JSONException e) {
                        userCard.setVisibility(View.GONE);
                    }
                }
            }
        });
    }

    void fillRepoInfo() {
        return;
    }
}