Merge pull request #877 from NVIDIA/pribalta/update_readme_nnunet

Add nnUnet to big readme

README.md

@@ -19,6 +19,7 @@ These examples, along with our NVIDIA deep learning software stack, are provided
 | [ResNeXt-101](https://github.com/NVIDIA/DeepLearningExamples/tree/master/PyTorch/Classification/ConvNets/resnext101-32x4d)  |PyTorch  | Yes  | Yes  | Yes  | -  | Yes  |   -  | [Yes](https://github.com/NVIDIA/DeepLearningExamples/tree/master/PyTorch/Classification/ConvNets/triton/resnext101-32x4d)  | Yes  | - |
 | [SE-ResNeXt-101](https://github.com/NVIDIA/DeepLearningExamples/tree/master/PyTorch/Classification/ConvNets/se-resnext101-32x4d)  |PyTorch  | Yes  | Yes  | Yes  | -  | Yes  | -  | [Yes](https://github.com/NVIDIA/DeepLearningExamples/tree/master/PyTorch/Classification/ConvNets/triton/se-resnext101-32x4d)  | Yes  | - |
 | [Mask R-CNN](https://github.com/NVIDIA/DeepLearningExamples/tree/master/PyTorch/Segmentation/MaskRCNN) |PyTorch  | Yes  | Yes  | Yes  | -  | -  |   -  | -  | -  | [Yes](https://github.com/NVIDIA/DeepLearningExamples/blob/master/PyTorch/Segmentation/MaskRCNN/pytorch/notebooks/pytorch_MaskRCNN_pyt_train_and_inference.ipynb) |
+| [nnUNet](https://github.com/NVIDIA/DeepLearningExamples/tree/master/PyTorch/Segmentation/nnUNet) |PyTorch  | Yes  | Yes  | Yes  | -  | -  |   -  | -  | Yes  | - |
 | [SSD](https://github.com/NVIDIA/DeepLearningExamples/tree/master/PyTorch/Detection/SSD) |PyTorch  | Yes  | Yes  | Yes  | -  | -  |   -  | -  | -  | [Yes](https://github.com/NVIDIA/DeepLearningExamples/blob/master/PyTorch/Detection/SSD/examples/inference.ipynb) |
 | [ResNet-50](https://github.com/NVIDIA/DeepLearningExamples/tree/master/TensorFlow/Classification/ConvNets/resnet50v1.5) |TensorFlow  | Yes  | Yes  | Yes  | -  | -  | -  | -  | Yes  | - |
 | [ResNeXt101](https://github.com/NVIDIA/DeepLearningExamples/tree/master/TensorFlow/Classification/ConvNets/resnext101-32x4d)  |TensorFlow  | Yes  | Yes  | Yes  | -  | -  |   -  | -  | Yes  | - |