The cpp sample hasn't been updated?

I think the cpp sample for face detection hasn't been updated:

the code requests `face_detect`

```cpp
INSPIRE_LAUNCH->Load("test_res/pack/Megatron");
auto archive = INSPIRE_LAUNCH->getMArchive();
auto ret = archive.LoadModel("face_detect", detModel);
```

but the models included in the zip file doesn't have it:

```
== Megatron v0.1.3 ==
yaml tag
yaml version
yaml face_detect_160
yaml face_detect_320
yaml face_detect_640
yaml landmark
yaml refine_net
yaml pose_quality
yaml feature
yaml mask_detect
yaml rgb_anti_spoofing
yaml face_attribute
yaml blink_predict
detection model loaded -13
```