docs: resnet documentation

added resnet documentation and script usage

examples/resnet/README.md

@@ -0,0 +1,15 @@
+# Resnet
+
+This script demonstrates how to run a ResNet model on multiple worlds using PyTorch. This script initializes a ResNet model on every worker. The leader sends an image to a worker for inference. After processing the image, the worker sends the predicted class back to the leader.
+
+## Running the Script in a single host
+
+```bash
+python m8d.py --num_workers 1 --backend gloo
+```
+
+## Running the Script in multiple hosts
+
+```bash
+python m8d.py --num_workers 2 --backend nccl --multihost --addr 10.20.1.50 --rank 0
+```