add README.md

dygraph/README.md

+# 动态图执行
+
+## 数据集设置
+'''
+data_dir='data/path'
+train_list='train/list/path'
+val_list='val/list/path'
+test_list='test/list/path'
+num_classes=number/of/dataset/classes
+'''
+
+## 训练
+```
+python3 train.py --model_name UNet \
+--data_dir $data_dir \
+--train_list $train_list \
+--val_list $val_list \
+--num_classes $num_classes \
+--input_size 192 192 \
+--num_epochs 4 \
+--save_interval_epochs 1 \
+--save_dir output
+```
+
+## 评估
+```
+python3 val.py --model_name UNet \
+--data_dir $data_dir \
+--val_list $val_list \
+--num_classes $num_classes \
+--input_size 192 192 \
+--model_dir output/epoch_1
+```
+
+## 预测
+```
+python3 infer.py --model_name UNet \
+--data_dir $data_dir \
+--test_list $test_list \
+--num_classes $num_classes \
+--input_size 192 192 \
+--model_dir output/epoch_1
+```